PT-2021-5823 · Gnome+9 · Gnome Glib+9

Published 2021-03-10 · Updated 2024-02-27 · CVE-2021-28153

Positive Technologies (AI Summary)

CVSS v3.1

5.3

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions GNOME GLib versions prior to 2.66.8

Description An issue was discovered in GNOME GLib when the g file replace() function is used with G FILE CREATE REPLACE DESTINATION to replace a path that is a dangling symlink. It incorrectly creates the target of the symlink as an empty file, which could have security relevance if the symlink is attacker-controlled. If the path is a symlink to a file that already exists, the contents of that file remain unchanged. The vulnerability may allow a remote attacker to impact data integrity without requiring root privileges.

Recommendations For GNOME GLib versions prior to 2.66.8, update to version 2.66.8 or later to resolve the issue. As a temporary workaround, consider restricting the use of the g file replace() function with G FILE CREATE REPLACE DESTINATION when handling dangling symlinks to minimize the risk of exploitation.

Exploit

Fix

Link Following

Weakness Enumeration

CWE-59

Related Identifiers

ALSA-2021:4385

ALSA-2022:8418

ALT-PU-2021-1517

AZL-6439

BDU:2022-00320

CESA-2021_4385

CVE-2021-28153

DLA-3044-1

MGASA-2021-0162

MGASA-2021-0318

OESA-2021-1164

OPENSUSE-SU-2022_1455-1

OPENSUSE-SU-2023_0174-1

RHSA-2021:4385

RHSA-2021_4385

RHSA-2022:8418

RHSA-2022_8418

RLSA-2021:4385

SUSE-SU-2022:1455-1

SUSE-SU-2022:1455-2

SUSE-SU-2022:1758-1

SUSE-SU-2022:1758-2

SUSE-SU-2022_1455-1

SUSE-SU-2022_1455-2

SUSE-SU-2022_1758-1

SUSE-SU-2022_1758-2

SUSE-SU-2023:0174-1

SUSE-SU-2023:3535-1

SUSE-SU-2023_0174-1

SUSE-SU-2023_3535-1

USN-4764-1

Affected Products

Alt Linux

Almalinux

Astra Linux

Centos

Gnome Glib

Linuxmint

Red Hat

Rocky Linux

Suse

Ubuntu

References · 79

• 🔥 https://gitlab.gnome.org/GNOME/glib/-/issues/2325 · Exploit
• https://osv.dev/vulnerability/SUSE-SU-2022:1758-2 · Vendor Advisory
• https://osv.dev/vulnerability/OESA-2021-1164 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6RXTD5HCP2K4AAUSWWZTBKQNHRCTAEOF · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-28153 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-28153 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2021-0318.html · Security Note
• https://osv.dev/vulnerability/ALPINE-CVE-2021-28153 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-28153 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-28153 · Vendor Advisory
• https://linux.oracle.com/errata/ELSA-2022-8418.html · Vendor Advisory
• https://osv.dev/vulnerability/ALSA-2022:8418 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2023:0174-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2023:3535-1 · Vendor Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ICUTQPHZNZWX2DZR46QFLQZRHVMHIILJ · Vendor Advisory