CVE-2020-18899

unknown

Published 2021-08-19 · Modified 2025-10-09

CVSS v3

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CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS v2

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VIR risk

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Description

An uncontrolled memory allocation in DataBufdata(subBox.length-sizeof(box)) function of Exiv2 0.27 allows attackers to cause a denial of service (DOS) via a crafted input.

Predictions

Exploit likelihood

30%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-18899

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-18899.html

OS impact

OS	Version	Status	Fixed in
sles		affected
debian	bookworm	fixed	`0.27.2-6`
debian	bullseye	fixed	`0.27.2-6`
debian	forky	fixed	`0.27.2-6`
debian	sid	fixed	`0.27.2-6`
debian	trixie	fixed	`0.27.2-6`

Package impact

Ecosystem	Package	Vulnerable	Fixed
PyPI	exiv2

References

https://www.suse.com/security/cve/CVE-2020-18899.html
https://github.com/Exiv2/exiv2/issues/742
https://cwe.mitre.org/data/definitions/789.html
https://security.gentoo.org/glsa/202312-06
https://security-tracker.debian.org/tracker/CVE-2020-18899

Verify integrity in audit chain (admin only). AS-IS.