PT-2020-6626 · Libsolv+4 · Libsolv+4

Yangjiageng · Published 2020-12-13 · Updated 2022-07-05 · CVE-2021-33938

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions libsolv versions prior to 0.7.17

Description The issue is related to a buffer overflow vulnerability in the prune to recommended function in src/policy.c of the libsolv library. This vulnerability allows attackers to cause a Denial of Service.

Recommendations For versions prior to 0.7.17, update to version 0.7.17 or later to resolve the issue. As a temporary workaround, consider restricting access to the prune to recommended function in src/policy.c until a patch is available.

Exploit

Fix

DoS

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

ALSA-2021:4060

BDU:2022-01695

CESA-2021_4060

CVE-2021-33938

RHSA-2021:4060

RHSA-2021_4060

RHSA-2022:5498

RLSA-2021:4060

RLSA-2022:5498

Affected Products

Almalinux

Centos

Red Hat

Rocky Linux

Libsolv

References · 496

• 🔥 https://github.com/openSUSE/libsolv/issues/420 · Exploit
• https://cve.org/CVERecord?id=CVE-2021-33938 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-33938 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-33938 · Vendor Advisory
• https://errata.rockylinux.org/RLSA-2022:5498 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-33938 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-33938 · Vendor Advisory
• https://bdu.fstec.ru/vul/2022-01695 · Security Note
• https://errata.rockylinux.org/RLSA-2021:4060 · Vendor Advisory
• https://osv.dev/vulnerability/RLSA-2022:5498 · Vendor Advisory
• https://osv.dev/vulnerability/RLSA-2021:4060 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-33938 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2021-4060.html · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-33938 · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2021:4060 · Vendor Advisory