Staging Environment: Content and features may be unstable or change without notice.
Advisory details: pypa / exiv2/PYSEC-2023-150
Advisory ID pypa/exiv2/PYSEC-2023-150
Aliases CVE-2020-18831
PYSEC-2023-150
Summary Buffer Overflow vulnerability in tEXtToDataBuf function in pngimage.cpp in Exiv2 0.27.1 allows remote attackers to cause a denial of service and other unspecified impacts via use of crafted file.
Status Published
Exploitability 0.5
Weighted Severity 7.0
Risk 3.5
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 7.8 https://github.com/pypa/advisory-database/blob/main/vulns/exiv2/PYSEC-2023-150.yaml
Reference id Reference type URL
https://github.com/Exiv2/exiv2/issues/828
https://www.exiv2.org/download.html
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://github.com/pypa/advisory-database/blob/main/vulns/exiv2/PYSEC-2023-150.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

Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2024-10-04T16:32:06Z/

Decision: Track*

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2020/18xxx/CVE-2020-18831.json

Source Advisory: vulnrichment/CVE-2020-18831

View SSVC decision tree 
[{'Exploitation': 'poc'},
 {'Automatable': 'no'},
 {'Technical Impact': 'total'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]