Bug 1997745 (CVE-2020-18771)

Summary:	CVE-2020-18771 exiv2: buffer overflow in Exiv2::Internal::Nikon1MakerNote::print0x0088 in nikonmn_int.cpp
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Nobody <nobody>
Status:	NEW ---	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	jgrulich, manisandro, michel, rdieter
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:		Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1997746, 1997747, 1997949, 1997950
Bug Blocks:	1997748

Description Guilherme de Almeida Suckevicz 2021-08-25 18:04:49 UTC

Exiv2 0.27.99.0 has a global buffer over-read in Exiv2::Internal::Nikon1MakerNote::print0x0088 in nikonmn_int.cpp which can result in an information leak.

Reference:
https://github.com/Exiv2/exiv2/issues/756

Comment 1 Guilherme de Almeida Suckevicz 2021-08-25 18:05:52 UTC

Created exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1997746]


Created mingw-exiv2 tracking bugs for this issue:

Affects: fedora-all [bug 1997747]

Comment 2 Huzaifa S. Sidhpurwala 2021-08-26 07:03:52 UTC

Upstream patch: https://github.com/Exiv2/exiv2/commit/476be794d0cdc2f63083221469019141d0a81389