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Computer vulnerabilities of NetScreen ScreenOS
OSPF: corrupting the routing database
Synthesis of the vulnerability
An attacker can spoof OSPF messages, in order to corrupt the routing database.
Severity: 3/4.
Creation date: 02/08/2013.
Revisions dates: 01/08/2014, 14/02/2017.
Identifiers: BID-61566, c03880910, CERTA-2013-AVI-458, CERTA-2013-AVI-487, CERTA-2013-AVI-508, cisco-sa-20130801-lsaospf, CQ95773, CSCug34469, CSCug34485, CSCug39762, CSCug39795, CSCug63304, CVE-2013-0149, HPSBHF02912, JSA10575, JSA10580, JSA10582, PR 878639, PR 895456, sk94490, SUSE-SU-2014:0879-1, VIGILANCE-VUL-13192, VU#229804.
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Description of the vulnerability
The RFC 2328 defines the OSPF protocol (Open Shortest Path First) which established IP routes, using LSA (Link State Advertisement) messages.
The LSA Type 1 Update (LSU, Link-State Update) message is used to update the routing database. However, the RFC does not request to check the "Link State ID" and "Advertising Router" fields of LSU messages. Several implementations (Cisco, Juniper, etc.) therefore do not perform this check.
An attacker can thus spoof a LSU message if he knows:
- the IP address of the target router
- LSA DB sequence numbers
- the router ID of the OSPF Designated Router
An attacker can therefore spoof OSPF messages, in order to corrupt the routing database.
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OpenSSL: denial of service via SSL3_AL_WARNING
Synthesis of the vulnerability
An attacker can send SSL3_AL_WARNING packets to an SSLv3 application linked to OpenSSL, in order to trigger a denial of service.
Severity: 2/4.
Creation date: 24/10/2016.
Identifiers: 1996096, 2000095, 2003480, 2003620, 2003673, 2004940, 2009389, bulletinoct2016, cpujul2019, CVE-2016-8610, DLA-814-1, DSA-3773-1, FEDORA-2017-3451dbec48, FEDORA-2017-e853b4144f, FreeBSD-SA-16:35.openssl, HPESBHF03897, JSA10808, JSA10809, JSA10810, JSA10811, JSA10813, JSA10814, JSA10816, JSA10817, JSA10818, JSA10820, JSA10821, JSA10822, JSA10825, openSUSE-SU-2017:0386-1, openSUSE-SU-2017:0487-1, openSUSE-SU-2018:4104-1, PAN-SA-2017-0017, pfSense-SA-17_03.webgui, RHSA-2017:0286-01, RHSA-2017:0574-01, RHSA-2017:1548-01, RHSA-2017:1549-01, RHSA-2017:1550-01, RHSA-2017:1551-01, RHSA-2017:1552-01, RHSA-2017:1658-01, RHSA-2017:1659-01, RHSA-2017:2493-01, RHSA-2017:2494-01, SA40886, SP-CAAAPUE, SPL-129207, SUSE-SU-2017:0304-1, SUSE-SU-2017:0348-1, SUSE-SU-2018:0112-1, SUSE-SU-2018:3864-1, SUSE-SU-2018:3864-2, SUSE-SU-2018:3964-1, SUSE-SU-2018:3994-1, SUSE-SU-2018:4068-1, SUSE-SU-2018:4274-1, SUSE-SU-2019:1553-1, USN-3181-1, USN-3183-1, USN-3183-2, VIGILANCE-VUL-20941.
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Description of the vulnerability
The OpenSSL product implements the SSL version 3 protocol.
The SSL3_AL_WARNING message is used to send an alert of level Warning. However, when these packets are received during the handshake, the library consumes 100% of CPU.
An attacker can therefore send SSL3_AL_WARNING packets to an SSLv3 application linked to OpenSSL, in order to trigger a denial of service.
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OpenSSL 1.0.2i: NULL pointer dereference via CRL
Synthesis of the vulnerability
An attacker can force a NULL pointer to be dereferenced via a CRL on an application linked to OpenSSL 1.0.2i, in order to trigger a denial of service.
Severity: 2/4.
Creation date: 26/09/2016.
Identifiers: 1996096, 2000095, 2000209, 2003480, 2003620, 2003673, 2008828, CERTFR-2016-AVI-333, cisco-sa-20160927-openssl, cpuapr2017, cpujan2018, cpuoct2017, CVE-2016-7052, FEDORA-2016-97454404fe, FEDORA-2016-a555159613, FreeBSD-SA-16:27.openssl, HPESBHF03856, JSA10759, openSUSE-SU-2016:2496-1, openSUSE-SU-2018:0458-1, SA132, SB10171, SP-CAAAPUE, SPL-129207, SSA:2016-270-01, SUSE-SU-2016:2470-1, SUSE-SU-2016:2470-2, TNS-2016-16, VIGILANCE-VUL-20701.
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Description of the vulnerability
The OpenSSL version 1.0.2i product fixed a bug in CRL management.
However, this fix does not check if a pointer is NULL, before using it.
An attacker can therefore force a NULL pointer to be dereferenced via a CRL on an application linked to OpenSSL 1.0.2i, in order to trigger a denial of service.
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OpenSSL 1.1.0a: use after free via TLS
Synthesis of the vulnerability
An attacker can force the usage of a freed memory area via TLS on an application linked to OpenSSL 1.1.0a, in order to trigger a denial of service, and possibly to run code.
Severity: 3/4.
Creation date: 26/09/2016.
Identifiers: 1996096, 2000095, 2000209, 2003480, 2003620, 2003673, 2008828, CERTFR-2016-AVI-333, cisco-sa-20160927-openssl, cpuapr2017, cpujan2018, CVE-2016-6309, HPESBHF03856, JSA10759, SA132, TNS-2016-16, VIGILANCE-VUL-20700.
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Description of the vulnerability
The OpenSSL version 1.1.0a product fixed the CVE-2016-6307 vulnerability.
However, the reception of a TLS message of 16kb frees a memory area before reusing it.
An attacker can therefore force the usage of a freed memory area via TLS on an application linked to OpenSSL 1.1.0a, in order to trigger a denial of service, and possibly to run code.
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OpenSSL: seven vulnerabilities
Synthesis of the vulnerability
An attacker can use several vulnerabilities of OpenSSL.
Severity: 3/4.
Number of vulnerabilities in this bulletin: 7.
Creation date: 22/09/2016.
Identifiers: 1991866, 1991867, 1991870, 1991871, 1991875, 1991876, 1991878, 1991880, 1991882, 1991884, 1991885, 1991886, 1991887, 1991889, 1991892, 1991894, 1991896, 1991902, 1991903, 1991951, 1991955, 1991959, 1991960, 1991961, 1992681, 1993777, 1996096, 1999395, 1999421, 1999474, 1999478, 1999479, 1999488, 1999532, 2000095, 2000209, 2000544, 2002870, 2003480, 2003620, 2003673, 2008828, bulletinapr2017, bulletinjul2016, bulletinoct2016, CERTFR-2016-AVI-320, CERTFR-2016-AVI-333, cisco-sa-20160927-openssl, cpuapr2017, cpuapr2018, cpujan2017, cpujan2018, cpujul2017, cpujul2019, cpuoct2017, CVE-2016-6302, CVE-2016-6303, CVE-2016-6304, CVE-2016-6305, CVE-2016-6306, CVE-2016-6307, CVE-2016-6308, DLA-637-1, DSA-3673-1, DSA-3673-2, FEDORA-2016-97454404fe, FEDORA-2016-a555159613, FG-IR-16-047, FG-IR-16-048, FG-IR-17-127, FreeBSD-SA-16:26.openssl, HPESBHF03856, HT207423, JSA10759, openSUSE-SU-2016:2391-1, openSUSE-SU-2016:2407-1, openSUSE-SU-2016:2496-1, openSUSE-SU-2016:2537-1, openSUSE-SU-2018:0458-1, RHSA-2016:1940-01, RHSA-2016:2802-01, RHSA-2017:1548-01, RHSA-2017:1549-01, RHSA-2017:1550-01, RHSA-2017:1551-01, RHSA-2017:1552-01, RHSA-2017:1658-01, RHSA-2017:1659-01, RHSA-2017:2493-01, RHSA-2017:2494-01, SA132, SA40312, SB10171, SB10215, SOL54211024, SOL90492697, SP-CAAAPUE, SPL-129207, SSA:2016-266-01, STORM-2016-005, SUSE-SU-2016:2387-1, SUSE-SU-2016:2394-1, SUSE-SU-2016:2458-1, SUSE-SU-2016:2468-1, SUSE-SU-2016:2469-1, SUSE-SU-2016:2470-1, SUSE-SU-2016:2470-2, TNS-2016-16, USN-3087-1, USN-3087-2, VIGILANCE-VUL-20678.
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Description of the vulnerability
Several vulnerabilities were announced in OpenSSL.
An attacker can create a memory over consumption via an OCSP request, in order to trigger a denial of service. [severity:3/4; CVE-2016-6304]
An attacker can make a process block itself via SSL_peek, in order to trigger a denial of service. [severity:2/4; CVE-2016-6305]
An attacker can generate a buffer overflow via MDC2_Update, in order to trigger a denial of service, and possibly to run code. [severity:1/4; CVE-2016-6303]
An attacker can generate a read only buffer overflow, in order to trigger a denial of service. [severity:1/4; CVE-2016-6302]
An attacker can generate a read only buffer overflow via the parsing of an X.509 certificate, in order to trigger a denial of service. [severity:1/4; CVE-2016-6306]
An attacker can make the server allocates a large amount of memory to process TLS packets. [severity:1/4; CVE-2016-6307]
An attacker can make the server allocates a large amount of memory to process DTLS packets. [severity:1/4; CVE-2016-6308]
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OpenSSL: memory corruption via BN_bn2dec
Synthesis of the vulnerability
An attacker can generate a memory corruption via BN_bn2dec() of OpenSSL, in order to trigger a denial of service, and possibly to run code.
Severity: 2/4.
Creation date: 24/08/2016.
Identifiers: 1996096, 1999395, 1999421, 1999474, 1999478, 1999479, 1999488, 1999532, 2000095, 2000209, 2002870, 2003480, 2003620, 2003673, 2008828, bulletinapr2017, bulletinjul2016, CERTFR-2016-AVI-333, cisco-sa-20160927-openssl, cpuapr2017, cpujan2018, cpuoct2017, CVE-2016-2182, DLA-637-1, DSA-3673-1, DSA-3673-2, FEDORA-2016-97454404fe, FEDORA-2016-a555159613, FG-IR-16-047, FG-IR-16-048, FG-IR-17-127, FreeBSD-SA-16:26.openssl, HPESBHF03856, JSA10759, K01276005, openSUSE-SU-2016:2391-1, openSUSE-SU-2016:2407-1, openSUSE-SU-2016:2537-1, openSUSE-SU-2018:0458-1, RHSA-2016:1940-01, SA132, SA40312, SB10171, SB10215, SOL01276005, SP-CAAAPUE, SPL-129207, SSA:2016-266-01, SUSE-SU-2016:2387-1, SUSE-SU-2016:2394-1, SUSE-SU-2016:2458-1, SUSE-SU-2016:2468-1, SUSE-SU-2016:2469-1, TNS-2016-16, USN-3087-1, USN-3087-2, VIGILANCE-VUL-20460.
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Description of the vulnerability
The OpenSSL library works on large numbers to perform operations such are RSA.
The BN_bn2dec() function converts a large number to its decimal representation. However, a special number forces BN_div_word() to return a limit value, then data are written after the end of the memory area.
An attacker can therefore generate a memory corruption via BN_bn2dec() of OpenSSL, in order to trigger a denial of service, and possibly to run code.
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OpenSSL: denial of service via DTLS Window
Synthesis of the vulnerability
An attacker can send a DTLS packet with a large sequence number to an application compiled with OpenSSL, in order to trigger a denial of service.
Severity: 2/4.
Creation date: 24/08/2016.
Identifiers: 1996096, 1999395, 1999474, 1999478, 1999479, 1999488, 1999532, 2000095, 2003480, 2003620, 2003673, bulletinapr2017, bulletinjul2016, CERTFR-2016-AVI-333, cisco-sa-20160927-openssl, cpuapr2017, cpujan2018, cpuoct2017, CVE-2016-2181, DLA-637-1, DSA-3673-1, DSA-3673-2, FEDORA-2016-97454404fe, FEDORA-2016-a555159613, FG-IR-16-047, FG-IR-16-048, FG-IR-17-127, FreeBSD-SA-16:26.openssl, JSA10759, K59298921, openSUSE-SU-2016:2391-1, openSUSE-SU-2016:2407-1, openSUSE-SU-2016:2537-1, openSUSE-SU-2018:0458-1, RHSA-2016:1940-01, SA132, SB10215, SOL59298921, SP-CAAAPUE, SPL-129207, SSA:2016-266-01, SUSE-SU-2016:2387-1, SUSE-SU-2016:2394-1, SUSE-SU-2016:2458-1, SUSE-SU-2016:2468-1, SUSE-SU-2016:2469-1, TNS-2016-16, USN-3087-1, USN-3087-2, VIGILANCE-VUL-20458.
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Description of the vulnerability
The OpenSSL library implements DTLS (Datagram Transport Layer Security, for example on UDP).
In order to manage replays, OpenSSL uses a sliding window containing accepted sequence numbers. However, if an attacker sends a packet with a large sequence number, the window is moved, and legitimate packets thus have numbers before the beginning of the window, and are rejected.
An attacker can therefore send a DTLS packet with a large sequence number to an application compiled with OpenSSL, in order to trigger a denial of service.
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OpenSSL: denial of service via DTLS Reassembly
Synthesis of the vulnerability
An attacker can send DTLS packets in the wrong order with missing packets to an application compiled with OpenSSL, in order to trigger a denial of service.
Severity: 2/4.
Creation date: 24/08/2016.
Identifiers: 1996096, 1999395, 1999474, 1999478, 1999479, 1999488, 1999532, 2000095, 2003480, 2003620, 2003673, bulletinapr2017, bulletinjul2016, bulletinjul2018, CERTFR-2016-AVI-333, cisco-sa-20160927-openssl, cpuapr2017, cpujan2018, cpuoct2017, CVE-2016-2179, DLA-637-1, DSA-3673-1, DSA-3673-2, FEDORA-2016-97454404fe, FEDORA-2016-a555159613, FG-IR-16-047, FG-IR-16-048, FG-IR-17-127, FreeBSD-SA-16:26.openssl, HPESBHF03856, JSA10759, openSUSE-SU-2016:2391-1, openSUSE-SU-2016:2407-1, openSUSE-SU-2016:2537-1, openSUSE-SU-2018:0458-1, RHSA-2016:1940-01, SA132, SB10215, SOL23512141, SP-CAAAPUE, SPL-129207, SSA:2016-266-01, SUSE-SU-2016:2387-1, SUSE-SU-2016:2394-1, SUSE-SU-2016:2458-1, SUSE-SU-2016:2468-1, SUSE-SU-2016:2469-1, TNS-2016-16, USN-3087-1, USN-3087-2, VIGILANCE-VUL-20457.
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Description of the vulnerability
The OpenSSL library implements DTLS (Datagram Transport Layer Security, for example on UDP).
DTLS packets can be in the wrong order. OpenSSL has to keep them in memory, in order to reassemble them. However, in two cases, message queues are not cleared.
An attacker can therefore send DTLS packets in the wrong order with missing packets to an application compiled with OpenSSL, in order to trigger a denial of service.
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OpenSSL: out-of-bounds memory reading via TS_OBJ_print_bio
Synthesis of the vulnerability
An attacker can force a read at an invalid address via TS_OBJ_print_bio() of OpenSSL, in order to trigger a denial of service, or to obtain sensitive information.
Severity: 1/4.
Creation date: 02/08/2016.
Identifiers: 1359615, 1996096, 2000095, 2003480, 2003620, 2003673, bulletinapr2017, bulletinjul2016, CERTFR-2016-AVI-333, cisco-sa-20160927-openssl, cpuapr2017, cpujan2018, cpuoct2017, CVE-2016-2180, DLA-637-1, DSA-3673-1, DSA-3673-2, FEDORA-2016-97454404fe, FEDORA-2016-a555159613, FG-IR-16-047, FG-IR-16-048, FG-IR-17-127, FreeBSD-SA-16:26.openssl, HPESBHF03856, JSA10759, openSUSE-SU-2016:2391-1, openSUSE-SU-2016:2407-1, openSUSE-SU-2018:0458-1, RHSA-2016:1940-01, SA132, SA40312, SB10215, SOL02652550, SP-CAAAPUE, SPL-129207, SSA:2016-266-01, SUSE-SU-2016:2387-1, SUSE-SU-2016:2394-1, SUSE-SU-2016:2469-1, TNS-2016-16, USN-3087-1, USN-3087-2, VIGILANCE-VUL-20286.
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Description of the vulnerability
The OpenSSL product implements the RFC 3161 Public Key Infrastructure Time-Stamp Protocol.
However, the TS_OBJ_print_bio() function tries to read a memory area located outside the expected range, which triggers a fatal error, or leads to the disclosure of a memory fragment.
An attacker can therefore force a read at an invalid address via TS_OBJ_print_bio() of OpenSSL, in order to trigger a denial of service, or to obtain sensitive information.
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OpenSSL: out-of-bounds memory reading
Synthesis of the vulnerability
An attacker can force a memory access at an invalid address in OpenSSL, in order to trigger a denial of service, or to obtain sensitive information.
Severity: 1/4.
Creation date: 09/06/2016.
Identifiers: 1991866, 1991867, 1991870, 1991871, 1991875, 1991876, 1991878, 1991880, 1991882, 1991884, 1991885, 1991886, 1991887, 1991889, 1991892, 1991894, 1991896, 1991902, 1991903, 1991951, 1991955, 1991959, 1991960, 1991961, 1996096, 1999395, 1999421, 1999474, 1999478, 1999479, 1999488, 1999532, 1999724, 2000095, 2000209, 2000544, 2001805, 2002770, 2002870, 2003480, 2003620, 2003673, 2008828, bulletinapr2016, bulletinapr2017, bulletinjul2016, CERTFR-2016-AVI-333, cisco-sa-20160927-openssl, cpuapr2017, cpujan2018, cpuoct2017, CVE-2016-2177, DLA-637-1, DSA-3673-1, DSA-3673-2, FEDORA-2016-97454404fe, FEDORA-2016-a555159613, FG-IR-16-047, FG-IR-16-048, FG-IR-17-127, FreeBSD-SA-16:26.openssl, HPESBHF03763, HPESBHF03856, JSA10759, openSUSE-SU-2016:2391-1, openSUSE-SU-2016:2407-1, openSUSE-SU-2016:2537-1, openSUSE-SU-2018:0458-1, RHSA-2016:1940-01, RHSA-2017:1548-01, RHSA-2017:1549-01, RHSA-2017:1550-01, RHSA-2017:1551-01, RHSA-2017:1552-01, RHSA-2017:1658-01, RHSA-2017:1659-01, SA132, SA40312, SB10165, SB10215, SOL23873366, SP-CAAAPUE, SPL-129207, SSA:2016-266-01, SUSE-SU-2016:2387-1, SUSE-SU-2016:2394-1, SUSE-SU-2016:2458-1, SUSE-SU-2016:2468-1, SUSE-SU-2016:2469-1, TNS-2016-16, USN-3087-1, USN-3087-2, USN-3181-1, VIGILANCE-VUL-19855.
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Description of the vulnerability
The source code of OpenSSL includes many loops where a pointer is used to go through a buffer.
The definition of the C language allows a pointer to be off by one byte after the buffer, but the behavior of any further access is undefined. Several end of loop tests follows the forme "pointer + current data length > end pointer" in such a way that these 2 expressions are not always defined according to the language specification. An attacker which can control dynamic memory allocations can trigger evaluation of undefined conditions and perhaps invalid memory access.
An attacker can therefore force a memory access at an invalid address in OpenSSL, in order to trigger a denial of service, or to obtain sensitive information.
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