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🛡️ CVE-2022-2520 — debian-linux

🟡 CVSS 6.5 — Medium ⚠️ Exploit Public CWE-131 NVD
6.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A flaw was found in libtiff 4.4.0rc1. There is a sysmalloc assertion fail in rotateImage() at tiffcrop.c:8621 that can cause program crash when reading a crafted input.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. A user must be tricked into taking some action. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: None — an unauthenticated stranger can try it.
  • User interaction: Required — someone has to click, open or visit something.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: None.
  • Availability impact: High — total loss, or loss the attacker controls.

Weakness class

CVE-2022-2520 is classified as CWE-131: Incorrect Buffer Size Calculation. The size computed for an allocation does not match what is later written into it, producing an overflow.

Affected software

CVE-2022-2520 is recorded against 2 packages.

  • debian-linux
  • libtiff

Timeline and source

Published on 31 August 2022 and last revised on 17 June 2026. A public exploit is known to exist, which raises the urgency of patching considerably. A vendor advisory or fix has been published. Record sourced from NVD.

References

gitlab.com
gitlab.com
www.debian.org
gitlab.com
gitlab.com
www.debian.org

Other advisories for this package

debian-linux has other advisories on record. If you are patching this one, these are worth checking on the same host:

Same weakness in other software

These advisories are the same class of weakness (CWE-131: Incorrect Buffer Size Calculation) in other software:

CVE-2022-2520 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 6.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE CWE-131
Public Exploit ⚠️ Yes
Source NVD
Published 2022-08-31
Updated 2026-08-20
Modified 2026-06-17

Affected Packages

Software From version Fixed in
debian-linux — —
libtiff — —

References

Exploit, Issue Tracking, Patch, Third Party Advisory https://gitlab.com/libtiff/libtiff/-/issues/424
Exploit, Issue Tracking, Patch, Third Party Advisory https://gitlab.com/libtiff/libtiff/-/merge_requests/378
Exploit, Issue Tracking, Patch, Third Party Advisory https://gitlab.com/libtiff/libtiff/-/issues/424
Exploit, Issue Tracking, Patch, Third Party Advisory https://gitlab.com/libtiff/libtiff/-/merge_requests/378

Similar Threats

Exploit Protection

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CVE-2022-2520 carries CVSS 6.5 Medium rating and a public exploit already exists. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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