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Fencer Vulns
medium 5.5

CVE-2021-28650 json

autoar-extractor.c in GNOME gnome-autoar before 0.3.1, as used by GNOME Shell, Nautilus, and other software, allows Directory Traversal dur…

published 2021-03-17 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-15319

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.5%
EPSS 0.5% chance of exploitation in 30 days, percentile 44%
public exploits
0
none known

Summary

autoar-extractor.c in GNOME gnome-autoar before 0.3.1, as used by GNOME Shell, Nautilus, and other software, allows Directory Traversal during extraction because it lacks a check of whether a file's parent is a symlink in certain complex situations. NOTE: this issue exists because of an incomplete fix for CVE-2020-36241.

Patch / fix

  • gnome gnome-autoar 0.3.1
  • gnome-autoar Debian 14, Debian 13, Debian 12 0.4.0-1

debian advisories DEBIAN-CVE-2021-28650

  • gnome-autoar Ubuntu 18.04 LTS 0.2.3-1ubuntu0.3
  • gnome-autoar Ubuntu 20.04 LTS 0.2.3-2ubuntu0.3

ubuntu advisories UBUNTU-CVE-2021-28650

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • LibRaw RHEL 8 0.19.5-3.el8
  • webkit2gtk3 RHEL 8 2.32.3-2.el8
  • gnome-autoar RHEL 8 0.2.3-2.el8
  • webkit2gtk3-jsc RHEL 8 2.32.3-2.el8

red hat advisories RHSA-2021:4381

  • gdm AlmaLinux 8 1:40.0-15.el8
  • gtk3 AlmaLinux 8 3.22.30-8.el8
  • vino AlmaLinux 8 3.22.0-11.el8
  • LibRaw AlmaLinux 8 0.19.5-3.el8
  • mutter AlmaLinux 8 3.32.2-60.el8
  • gnome-shell AlmaLinux 8 3.32.2-40.el8
  • webkit2gtk3 AlmaLinux 8 2.32.3-2.el8
  • gnome-autoar AlmaLinux 8 0.2.3-2.el8

almalinux advisories ALSA-2021:4381

  • gdm Rocky Linux 8 1:40.0-15.el8
  • gtk3 Rocky Linux 8 3.22.30-8.el8
  • vino Rocky Linux 8 3.22.0-11.el8
  • LibRaw Rocky Linux 8 0.19.5-3.el8
  • mutter Rocky Linux 8 3.32.2-60.el8
  • gnome-shell Rocky Linux 8 3.32.2-40.el8
  • webkit2gtk3 Rocky Linux 8 2.32.3-2.el8
  • gnome-autoar Rocky Linux 8 0.2.3-2.el8

rocky linux advisories RLSA-2021:4381

  • gnome-autoar Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 0.3.1-r0

alpine advisories ALPINE-CVE-2021-28650

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gnome-autoar Arch Linux 0.3.1-1

arch linux advisories AVG-1537

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2021-28650 updated cvss 3.9

gnome-autoar: Directory traversal via directory symbolic links pointing outside of the destination directory (incomplete CVE-2020-36241 fix)

  • Red Hat Enterprise Linux AppStream (v. 8) gnome-autoar 0.2.3-2.el8
    fixed: vendor fix RHSA-2021:4381
  • Red Hat CodeReady Linux Builder (v. 8) LibRaw 0.19.5-3.el8, mutter 3.32.2-60.el8, accountsservice 0.6.55-2.el8, gnome-software 3.36.1-10.el8, accountsservice-libs 0.6.55-2.el8 Red Hat Enterprise Linux 9 gnome-autoar Red Hat Enterprise Linux AppStream (v. 8) gdm 40.0-15.el8, gtk3 3.22.30-8.el8, vino 3.22.0-11.el8, LibRaw 0.19.5-3.el8, mutter 3.32.2-60.el8, webkit2gtk3 2.32.3-2.el8, +42 more Red Hat Enterprise Linux BaseOS (v. 8) gsettings-desktop-schemas 3.32.0-6.el8
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.53% chance of exploitation in the next 30 days, higher than 44% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-59 Improper Link Resolution Before File Access

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.