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    CVE-2019-20503

    usrsctp before 2019-12-20 has out-of-bounds reads in sctp_load_addresses_from_init.

    Published:Mar 6, 2020
    Last Modified:Nov 21, 2024
    EPS:Mar 6, 2020
    EPSS Score:0.01335
    CVSS Score:6.5

    Affected Products

    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Redhat
    Product
    Enterprise Linux
    Vendor
    Redhat
    Product
    Rhel E4s
    Vendor
    Redhat
    Product
    Rhel Extras
    Vendor
    Usrsctp Project
    Product
    Usrsctp

    Exploits

    https://bugs.chromium.org/p/project-zero/issues/detail?id=1992https://bugs.chromium.org/p/project-zero/issues/detail?id=1992

    Common Weakness Enumeration

    CWE-125 Out-of-bounds Read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-540 Overread Buffers

    Related CVEs

    CVE-2026-13476 (CVSS 7.3) — IBM Informix Dynamic Server 14.10, 15.0, and 12.10 could allow an unauthenticated user to execute arbitrary co…
    CVE-2026-13367 (CVSS 7.8) — IBM Informix Dynamic Server 14.10, and 15.0 contain a local privilege escalation vulnerability in the oninit s…
    CVE-2026-47337 (CVSS 3.3) — Ubuntu Linux 6.8, 6.17 and 7.0 contain SAUCE patches with a possible NULL pointer dereference in the handling …
    CVE-2026-47336 (CVSS 3.3) — Ubuntu Linux 6.8 contains SAUCE patches with a possible use of an uninitialized variable in AppArmor AF_INET/A…
    CVE-2026-47335 (CVSS 5.5) — Ubuntu Linux 6.8 contains SAUCE patches with a possible NULL pointer dereference in the handling of AppArmor n…
    CVE-2026-47334 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly sleep while holding a spinlock…
    CVE-2026-47333 (CVSS 7.8) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which can potentially incorrectly compute the si…
    CVE-2026-47332 (CVSS 5.5) — Ubuntu Linux 6.8, 6.17 and 7.0 contain AppArmor SAUCE patches which incorrectly validate the size of an intern…
    CVE-2026-47331 (CVSS 7.8) — Ubuntu Linux 6.8 contains AppArmor SAUCE patches which fail to acquire a lock when modifying a linked list. An…
    CVE-2026-47330 (CVSS 3.3) — Ubuntu Linux 6.8, 7.17 and 7.0 contain AppArmor SAUCE patches which can, under certain circumstances, use an u…

    References

    http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00022.html
    http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00028.html
    http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00030.html
    http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00037.html
    http://seclists.org/fulldisclosure/2020/May/49
    http://seclists.org/fulldisclosure/2020/May/52
    http://seclists.org/fulldisclosure/2020/May/55
    http://seclists.org/fulldisclosure/2020/May/59
    https://access.redhat.com/errata/RHSA-2020:0815
    https://access.redhat.com/errata/RHSA-2020:0816
    https://access.redhat.com/errata/RHSA-2020:0819
    https://access.redhat.com/errata/RHSA-2020:0820
    https://bugs.chromium.org/p/project-zero/issues/detail?id=1992
    https://chromereleases.googleblog.com/2020/03/stable-channel-update-for-desktop_18.html
    https://crbug.com/1059349
    https://github.com/sctplab/usrsctp/commit/790a7a2555aefb392a5a69923f1e9d17b4968467
    https://lists.debian.org/debian-lts-announce/2020/03/msg00013.html
    https://lists.debian.org/debian-lts-announce/2020/03/msg00023.html
    https://lists.debian.org/debian-lts-announce/2023/07/msg00003.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DDNOAGIX5D77TTHT6YPMVJ5WTXTCQEI/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWANFIR3PYAL5RJQ4AO3ZS2DYMSF2ZGZ/
    https://security.gentoo.org/glsa/202003-02
    https://security.gentoo.org/glsa/202003-10
    https://support.apple.com/HT211168
    https://support.apple.com/HT211171
    https://support.apple.com/HT211175
    https://support.apple.com/HT211177
    https://support.apple.com/kb/HT211168
    https://support.apple.com/kb/HT211171
    https://support.apple.com/kb/HT211175
    https://support.apple.com/kb/HT211177
    https://usn.ubuntu.com/4299-1/
    https://usn.ubuntu.com/4328-1/
    https://usn.ubuntu.com/4335-1/
    https://www.debian.org/security/2020/dsa-4639
    https://www.debian.org/security/2020/dsa-4642
    https://www.debian.org/security/2020/dsa-4645
    http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00022.html
    http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00028.html
    http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00030.html
    http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00037.html
    http://seclists.org/fulldisclosure/2020/May/49
    http://seclists.org/fulldisclosure/2020/May/52
    http://seclists.org/fulldisclosure/2020/May/55
    http://seclists.org/fulldisclosure/2020/May/59
    https://access.redhat.com/errata/RHSA-2020:0815
    https://access.redhat.com/errata/RHSA-2020:0816
    https://access.redhat.com/errata/RHSA-2020:0819
    https://access.redhat.com/errata/RHSA-2020:0820
    https://bugs.chromium.org/p/project-zero/issues/detail?id=1992
    https://chromereleases.googleblog.com/2020/03/stable-channel-update-for-desktop_18.html
    https://crbug.com/1059349
    https://github.com/sctplab/usrsctp/commit/790a7a2555aefb392a5a69923f1e9d17b4968467
    https://lists.debian.org/debian-lts-announce/2020/03/msg00013.html
    https://lists.debian.org/debian-lts-announce/2020/03/msg00023.html
    https://lists.debian.org/debian-lts-announce/2023/07/msg00003.html
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DDNOAGIX5D77TTHT6YPMVJ5WTXTCQEI/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/
    https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWANFIR3PYAL5RJQ4AO3ZS2DYMSF2ZGZ/
    https://security.gentoo.org/glsa/202003-02
    https://security.gentoo.org/glsa/202003-10
    https://support.apple.com/HT211168
    https://support.apple.com/HT211171
    https://support.apple.com/HT211175
    https://support.apple.com/HT211177
    https://support.apple.com/kb/HT211168
    https://support.apple.com/kb/HT211171
    https://support.apple.com/kb/HT211175
    https://support.apple.com/kb/HT211177
    https://usn.ubuntu.com/4299-1/
    https://usn.ubuntu.com/4328-1/
    https://usn.ubuntu.com/4335-1/
    https://www.debian.org/security/2020/dsa-4639
    https://www.debian.org/security/2020/dsa-4642
    https://www.debian.org/security/2020/dsa-4645

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High