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Computer vulnerabilities of Shibboleth SP

cybersecurity bulletin CVE-2018-0489

Shibboleth Service Provider: signed data tampering

Synthesis of the vulnerability

An attacker can tamper with an SAML document to be processed by Shibboleth Service Provider to reduce the scope of the cryptographic signature and so to become able to change the document, in order to raise his privileges.
Severity: 3/4.
Creation date: 27/02/2018.
Revision date: 28/02/2018.
Identifiers: CVE-2018-0489, DLA-1296-1, DSA-4126-1, openSUSE-SU-2018:0738-1, VIGILANCE-VUL-25384, VU#475445.
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Description of the vulnerability

An attacker can tamper with an SAML document to be processed by Shibboleth Service Provider to reduce the scope of the cryptographic signature and so to become able to change the document, in order to raise his privileges.
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threat alert CVE-2018-0486

XMLTooling-C: privilege escalation via DTD Processing

Synthesis of the vulnerability

An attacker can bypass restrictions via DTD Processing of XMLTooling-C, in order to escalate his privileges.
Severity: 3/4.
Creation date: 15/01/2018.
Identifiers: CVE-2018-0486, DLA-1242-1, DSA-4085-1, openSUSE-SU-2018:0158-1, openSUSE-SU-2018:0738-1, SA43877, SUSE-SU-2018:0140-1, VIGILANCE-VUL-25037.
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Description of the vulnerability

An attacker can bypass restrictions via DTD Processing of XMLTooling-C, in order to escalate his privileges.
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threat note CVE-2017-8816 CVE-2017-8817 CVE-2017-8818

curl: three vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of curl.
Severity: 2/4.
Number of vulnerabilities in this bulletin: 3.
Creation date: 29/11/2017.
Identifiers: bulletinapr2018, bulletinoct2018, CVE-2017-8816, CVE-2017-8817, CVE-2017-8818, DLA-1195-1, DSA-4051-1, FEDORA-2017-0c062324cd, FEDORA-2017-45bdf4dace, HT208465, HT208692, JSA10874, openSUSE-SU-2018:0161-1, RHSA-2018:3558-01, STORM-2019-002, USN-3498-1, USN-3498-2, VIGILANCE-VUL-24564.
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Description of the vulnerability

An attacker can use several vulnerabilities of curl.
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security weakness CVE-2017-16852

Shibboleth Service Provider: privilege escalation via Dynamic MetadataProvider Security Filters

Synthesis of the vulnerability

An attacker can bypass restrictions via Dynamic MetadataProvider Security Filters of Shibboleth Service Provider, in order to escalate his privileges.
Severity: 2/4.
Creation date: 15/11/2017.
Revision date: 15/11/2017.
Identifiers: CVE-2017-16852, DLA-1179-1, DSA-4038-1, openSUSE-SU-2017:3229-1, SUSE-SU-2017:3215-1, VIGILANCE-VUL-24444.
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Description of the vulnerability

An attacker can bypass restrictions via Dynamic MetadataProvider Security Filters of Shibboleth Service Provider, in order to escalate his privileges.
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threat alert CVE-2016-8615 CVE-2016-8616 CVE-2016-8617

Curl: multiple vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of Curl.
Severity: 3/4.
Number of vulnerabilities in this bulletin: 11.
Creation date: 02/11/2016.
Identifiers: 2001818, 2009692, bulletinapr2018, CERTFR-2019-AVI-325, cpuoct2018, CVE-2016-8615, CVE-2016-8616, CVE-2016-8617, CVE-2016-8618, CVE-2016-8619, CVE-2016-8620, CVE-2016-8621, CVE-2016-8622, CVE-2016-8623, CVE-2016-8624, CVE-2016-8625, DLA-711-1, DSA-2019-114, DSA-3705-1, FEDORA-2016-e8e8cdb4ed, HT207423, JSA10874, JSA10951, K01006862, K10196624, K26899353, K44503763, K46123931, K52828640, MIGR-5099570, openSUSE-SU-2016:2768-1, RHSA-2018:3558-01, SSA:2016-308-01, STORM-2019-002, SUSE-SU-2016:2699-1, SUSE-SU-2016:2714-1, USN-3123-1, VIGILANCE-VUL-20989.
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Description of the vulnerability

Several vulnerabilities were announced in Curl.

An attacker can bypass access restrictions via Cookie Injection, in order to read or alter data. [severity:2/4; CVE-2016-8615]

An attacker can bypass security features via Case Insensitive Password Comparison, in order to escalate his privileges. [severity:2/4; CVE-2016-8616]

An attacker can generate a memory corruption via Multiplication, in order to trigger a denial of service, and possibly to run code. [severity:3/4; CVE-2016-8617]

An attacker can force the usage of a freed memory area via curl_maprintf(), in order to trigger a denial of service, and possibly to run code. [severity:3/4; CVE-2016-8618]

An attacker can force the usage of a freed memory area via krb5, in order to trigger a denial of service, and possibly to run code. [severity:3/4; CVE-2016-8619]

An attacker can generate a buffer overflow via Glob Parser, in order to trigger a denial of service, and possibly to run code. [severity:3/4; CVE-2016-8620]

An attacker can force a read at an invalid address via Curl_getdate, in order to trigger a denial of service, or to obtain sensitive information. [severity:2/4; CVE-2016-8621]

An attacker can generate an integer overflow via URL Unescape, in order to trigger a denial of service, and possibly to run code. [severity:3/4; CVE-2016-8622]

An attacker can force the usage of a freed memory area via Shared Cookies, in order to trigger a denial of service, and possibly to run code. [severity:3/4; CVE-2016-8623]

An attacker can bypass security features via URL Parsing, in order to obtain sensitive information. [severity:2/4; CVE-2016-8624]

An attacker can bypass security features via IDNA 2003, in order to obtain sensitive information. [severity:2/4; CVE-2016-8625]
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computer threat alert CVE-2016-8610

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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security alert CVE-2016-7052

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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cybersecurity threat CVE-2016-4463

Apache Xerces-C: denial of service via a deeply nested DTD

Synthesis of the vulnerability

An attacker can submit an XML document including a deeply nested DTD to Apache Xerces-C, in order to trigger a denial of service.
Severity: 2/4.
Creation date: 30/06/2016.
Identifiers: 1983969, 1984073, 1987066, 1990410, cpujul2018, CVE-2016-4463, DLA-535-1, DSA-3610-1, FEDORA-2016-0a061f6dd9, FEDORA-2016-7615febbd6, FEDORA-2016-84373c5f4f, FEDORA-2016-87e8468465, FEDORA-2016-9284772686, FEDORA-2016-d2d6890690, FEDORA-2018-51ce232320, openSUSE-SU-2016:1808-1, openSUSE-SU-2016:2232-1, RHSA-2018:3335-01, RHSA-2018:3506-01, RHSA-2018:3514-01, SB10276, SOL70191975, SUSE-SU-2018:3277-1, VIGILANCE-VUL-20001.
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Description of the vulnerability

The Apache Xerces-C XML parser handles Document Type Definition, including the internal part in an XML document.

DTDs are recursively parsed. However, Xerces does not limit the depth of the element definitions in the DTD. So a very deeply nested DTD can make the parser stack grow until its limit. This overflow kills the application process.

An attacker can therefore submit an XML document including a deeply nested DTD to Apache Xerces-C, in order to trigger a denial of service.
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computer vulnerability note 19526

Shibboleth Service Provider: data reading via PathRegex

Synthesis of the vulnerability

An attacker can change the case of urls, to bypass PathRegex rules of Shibboleth Service Provider, in order to obtain sensitive information.
Severity: 2/4.
Creation date: 04/05/2016.
Identifiers: VIGILANCE-VUL-19526.
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Description of the vulnerability

The Shibboleth Service Provider product uses the shibboleth2.xml configuration file.

This file can contain the PathRegex, which filters access by applying a regular expression on urls. The ignoreCase attribute indicates if this restriction has to ignore the character case. However, the logic of this attribute is reverted (ignoreCase=true means ignoreCase=false).

An attacker can therefore change the case of urls, to bypass PathRegex rules of Shibboleth Service Provider, in order to obtain sensitive information.
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vulnerability note CVE-2016-2105 CVE-2016-2106 CVE-2016-2107

OpenSSL: six vulnerabilities

Synthesis of the vulnerability

An attacker can use several vulnerabilities of OpenSSL.
Severity: 3/4.
Number of vulnerabilities in this bulletin: 6.
Creation date: 03/05/2016.
Identifiers: 1982949, 1985850, 1987779, 1993215, 1995099, 1998797, 2003480, 2003620, 2003673, 510853, 9010083, bulletinapr2016, bulletinapr2017, CERTFR-2016-AVI-151, CERTFR-2016-AVI-153, CERTFR-2018-AVI-160, cisco-sa-20160504-openssl, cpuapr2017, cpujan2018, cpujul2016, cpujul2017, cpujul2018, cpuoct2016, cpuoct2017, cpuoct2018, CTX212736, CTX233832, CVE-2016-2105, CVE-2016-2106, CVE-2016-2107, CVE-2016-2108, CVE-2016-2109, CVE-2016-2176, DLA-456-1, DSA-3566-1, ESA-2017-142, FEDORA-2016-05c567df1a, FEDORA-2016-1e39d934ed, FEDORA-2016-e1234b65a2, FG-IR-16-026, FreeBSD-SA-16:17.openssl, HPESBGN03728, HPESBHF03756, HT206903, JSA10759, K23230229, K36488941, K51920288, K75152412, K93600123, MBGSA-1603, MIGR-5099595, MIGR-5099597, NTAP-20160504-0001, openSUSE-SU-2016:1237-1, openSUSE-SU-2016:1238-1, openSUSE-SU-2016:1239-1, openSUSE-SU-2016:1240-1, openSUSE-SU-2016:1241-1, openSUSE-SU-2016:1242-1, openSUSE-SU-2016:1243-1, openSUSE-SU-2016:1273-1, openSUSE-SU-2016:1566-1, openSUSE-SU-2017:0487-1, PAN-SA-2016-0020, PAN-SA-2016-0028, RHSA-2016:0722-01, RHSA-2016:0996-01, RHSA-2016:1137-01, RHSA-2016:1648-01, RHSA-2016:1649-01, RHSA-2016:1650-01, RHSA-2016:2054-01, RHSA-2016:2055-01, RHSA-2016:2056-01, RHSA-2016:2073-01, SA123, SA40202, SB10160, SOL23230229, SOL36488941, SOL51920288, SOL75152412, SP-CAAAPPQ, SPL-119440, SPL-121159, SPL-123095, SSA:2016-124-01, STORM-2016-002, SUSE-SU-2016:1206-1, SUSE-SU-2016:1228-1, SUSE-SU-2016:1231-1, SUSE-SU-2016:1233-1, SUSE-SU-2016:1267-1, SUSE-SU-2016:1290-1, SUSE-SU-2016:1360-1, SUSE-SU-2018:0112-1, TNS-2016-10, USN-2959-1, VIGILANCE-VUL-19512, VN-2016-006, VN-2016-007.
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Description of the vulnerability

Several vulnerabilities were announced in OpenSSL.

An attacker can act as a Man-in-the-Middle and use the AES CBC algorithm with a server supporting AES-NI, in order to read or write data in the session. This vulnerability was initially fixed in versions 1.0.1o and 1.0.2c, but it was not disclosed at that time. [severity:3/4; CVE-2016-2108]

An attacker can act as a Man-in-the-Middle and use the AES CBC algorithm with a server supporting AES-NI, in order to read or write data in the session. [severity:3/4; CVE-2016-2107]

An attacker can generate a buffer overflow in EVP_EncodeUpdate(), which is mainly used by command line applications, in order to trigger a denial of service, and possibly to run code. [severity:2/4; CVE-2016-2105]

An attacker can generate a buffer overflow in EVP_EncryptUpdate(), which is difficult to reach, in order to trigger a denial of service, and possibly to run code. [severity:2/4; CVE-2016-2106]

An attacker can trigger an excessive memory usage in d2i_CMS_bio(), in order to trigger a denial of service. [severity:2/4; CVE-2016-2109]

An attacker can force a read at an invalid address in applications using X509_NAME_oneline(), in order to trigger a denial of service, or to obtain sensitive information. [severity:2/4; CVE-2016-2176]
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