CVE-2021-3472
Published: August 31, 2023Last modified: August 31, 2023
Description
A flaw was found in xorg-x11-server in versions before 1.20.11. An integer underflow can occur in xserver which can lead to a local privilege escalation. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | xorg-server | Not affected (21.1.8-r0) |
| Stream | xorg-server | Not affected (21.1.8-r3) |
References
- http://www.openwall.com/lists/oss-security/2021/04/13/1
- https://bugzilla.redhat.com/show_bug.cgi?id=1944167
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/7aaf54a1884f71dc363f0b884e57bcb67407a6cd
- https://lists.debian.org/debian-lts-announce/2021/04/msg00013.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MDF7TAJE7NPZPNVOXSD5HBIFLNPUOD2V/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MO6S5OPXUDYBSRSVWVLFLJ6AFERG4HNY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/N63KL3T22HNFT4FJ7VMVF6U5Q4RFJIQF/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PEXPCLMVU25AUZTUXC4MYBGPKOAIM5TW/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/MDF7TAJE7NPZPNVOXSD5HBIFLNPUOD2V/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/MO6S5OPXUDYBSRSVWVLFLJ6AFERG4HNY/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/N63KL3T22HNFT4FJ7VMVF6U5Q4RFJIQF/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/PEXPCLMVU25AUZTUXC4MYBGPKOAIM5TW/
- https://lists.x.org/archives/xorg-announce/2021-April/003080.html
- https://seclists.org/oss-sec/2021/q2/20
- https://security.gentoo.org/glsa/202104-02
- https://www.debian.org/security/2021/dsa-4893
- https://www.tenable.com/plugins/nessus/148701
- https://www.zerodayinitiative.com/advisories/ZDI-21-463/