[Git][security-tracker-team/security-tracker][master] Further triage CVE-2020-18831/exiv2

[Emilio Pozuelo Monfort (@pochu)]

Emilio Pozuelo Monfort pushed to branch master at Debian Security Tracker / security-tracker


Commits:
3591a7af by Emilio Pozuelo Monfort at 2023-09-29T18:43:39+02:00
Further triage CVE-2020-18831/exiv2

Mark the introductory commit, verified by source inspection and by
testing it to trigger the invalid read.

- - - - -


1 changed file:

- data/CVE/list


Changes:

=====================================
data/CVE/list
=====================================
@@ -232124,10 +232124,11 @@ CVE-2020-18832
 	RESERVED
 CVE-2020-18831 (Buffer Overflow vulnerability in tEXtToDataBuf function in pngimage.cp ...)
 	- exiv2 0.27.2-6
-	[buster] - exiv2 <not-affected> (exiv2 -pR flags introduced later and poc fail with "Exiv2 exception in print action for file poc.png". Introduced later by chunked read.)
+	[buster] - exiv2 <not-affected> (Vulnerable code introduced later)
 	NOTE: https://github.com/Exiv2/exiv2/issues/828
 	NOTE: https://github.com/Exiv2/exiv2/pull/862
-	NOTE: https://github.com/Exiv2/exiv2/commit/6068df4c01ce915befb763bd0fd718d16a5df130 (v0.27.2-RC1)
+	NOTE: Introduced by: https://github.com/Exiv2/exiv2/commit/4617dc37284bb14c15fb884a7252de7c2b8b8854
+	NOTE: Fixed by: https://github.com/Exiv2/exiv2/commit/6068df4c01ce915befb763bd0fd718d16a5df130 (v0.27.2-RC1)
 CVE-2020-18830
 	RESERVED
 CVE-2020-18829



View it on GitLab: https://salsa.debian.org/security-tracker-team/security-tracker/-/commit/3591a7afcc995b33143f7ea9de0581c789b53498

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