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Vulnerability of usrsctp: out-of-bounds memory reading via sctp_load_addresses_from_init

Synthesis of the vulnerability 

An attacker can force a read at an invalid address via sctp_load_addresses_from_init() of usrsctp, in order to trigger a denial of service, or to obtain sensitive information.
Impacted software: Debian, Fedora, Chrome, Edge Chromium, Firefox, Thunderbird, openSUSE Leap, Opera, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.
Severity of this computer vulnerability: 2/4.
Creation date: 19/03/2020.
Références of this announce: ADV200002, CVE-2019-20503, DLA-2140-1, DLA-2150-1, DSA-4639-1, DSA-4642-1, DSA-4645-1, FEDORA-2020-18f712ef2d, FEDORA-2020-39e0b8bd14, FEDORA-2020-b00f3fbb69, MFSA-2020-08, MFSA2020-08, MFSA-2020-09, MFSA2020-09, MFSA-2020-10, MFSA2020-10, openSUSE-SU-2020:0340-1, openSUSE-SU-2020:0365-1, openSUSE-SU-2020:0366-1, openSUSE-SU-2020:0389-1, RHSA-2020:0815-01, RHSA-2020:0816-01, RHSA-2020:0819-01, RHSA-2020:0820-01, RHSA-2020:0905-01, RHSA-2020:0914-01, RHSA-2020:0918-01, RHSA-2020:0919-01, RHSA-2020:1270-01, SSA:2020-070-01, SSA:2020-073-01, SUSE-SU-2020:0686-1, SUSE-SU-2020:0717-1, SUSE-SU-2020:0721-1, SUSE-SU-2020:14312-1, USN-4299-1, VIGILANCE-VUL-31834.

Description of the vulnerability 

An attacker can force a read at an invalid address via sctp_load_addresses_from_...
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This cybersecurity threat impacts software or systems such as Debian, Fedora, Chrome, Edge Chromium, Firefox, Thunderbird, openSUSE Leap, Opera, RHEL, Slackware, SUSE Linux Enterprise Desktop, SLES, Ubuntu.

Our Vigil@nce team determined that the severity of this computer threat note is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this security threat.

Solutions for this threat 

Solutions for this vulnerability are not yet public.
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