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CVE-2018-20096

Published: 12 December 2018

There is a heap-based buffer over-read in the Exiv2::tEXtToDataBuf function of pngimage.cpp in Exiv2 0.27-RC3. A crafted input will lead to a remote denial of service attack.

Notes

AuthorNote
mdeslaur
0.25 is not affected, code introduced later

Priority

Low

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
exiv2
Launchpad, Ubuntu, Debian
upstream Needs triage

trusty Does not exist
(trusty was not-affected [code not present])
xenial Not vulnerable
(code not present)
bionic Not vulnerable
(code not present)
cosmic Not vulnerable
(code not present)
Patches:
upstream: https://github.com/Exiv2/exiv2/commit/4f9c912c2267f1bc33d9c28f1b063d571770af75
upstream: https://github.com/Exiv2/exiv2/commit/902dad0a6eae98b0057cae1b13e78f476f053fae

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H