Staging Environment: Content and features may be unstable or change without notice.
Advisory details: pysec / PYSEC-2021-877
Advisory ID pysec/PYSEC-2021-877
Aliases CVE-2021-31292
Summary An integer overflow in CrwMap::encode0x1810 of Exiv2 0.27.3 allows attackers to trigger a heap-based buffer overflow and cause a denial of service (DOS) via crafted metadata.
Status Published
Exploitability 0.5
Weighted Severity 3.8
Risk 1.9
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://osv-vulnerabilities.storage.googleapis.com/PyPI/all.zip
Reference id Reference type URL
https://github.com/Exiv2/exiv2/issues/1530
https://lists.debian.org/debian-lts-announce/2021/08/msg00028.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FMDT4PJB7P43WSOM3TRQIY3J33BAFVVE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UYGDELIFFJWKUU7SO3QATCIXCZJERGAC/
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://osv-vulnerabilities.storage.googleapis.com/PyPI/all.zip
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.