Staging Environment: Content and features may be unstable or change without notice.
Advisory details: pypa / exiv2/PYSEC-2020-344
Advisory ID pypa/exiv2/PYSEC-2020-344
Aliases CVE-2019-20421
PYSEC-2020-344
Summary In Jp2Image::readMetadata() in jp2image.cpp in Exiv2 0.27.2, an input file can result in an infinite loop and hang, with high CPU consumption. Remote attackers could leverage this vulnerability to cause a denial of service via a crafted file.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv3.1 7.5 https://github.com/pypa/advisory-database/blob/main/vulns/exiv2/PYSEC-2020-344.yaml
Reference id Reference type URL
https://github.com/Exiv2/exiv2/commit/a82098f4f90cd86297131b5663c3dec6a34470e8
https://github.com/Exiv2/exiv2/issues/1011
https://lists.debian.org/debian-lts-announce/2021/08/msg00028.html
https://usn.ubuntu.com/4270-1/
https://www.debian.org/security/2021/dsa-4958
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://github.com/pypa/advisory-database/blob/main/vulns/exiv2/PYSEC-2020-344.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.