CVE-2020-18831 json
Buffer Overflow vulnerability in tEXtToDataBuf function in pngimage.cpp in Exiv2 0.27.1 allows remote attackers to cause a denial of servic…
published 2023-08-22 3 y ago modified 2026-06-17 4 mo ago also PYSEC-2023-150 , EUVD-2023-0076
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 56%
- public exploits
- 0
- none known
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.
Patch / fix
- exiv2 Debian 14, Debian 13, Debian 12 0.27.2-6
debian advisories DEBIAN-CVE-2020-18831
- github.com/Exiv2/exiv2/issues/828 advisory
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 y ago
Exploit prediction
0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/Exiv2/exiv2/issues/828 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| OSV | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | exiv2 | all versions |
no fix listed |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
github.com
/Exiv2/exiv2/issues/828
exploit, issue-tracking, patch, vendor-advisory, advisory
-
exiv2.org
/download.html
broken-link, web
Sources
- CVE List CVE-2020-18831
- NVD CVE-2020-18831
- OSV PYSEC-2023-150
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