What is CVE-2020-18831?

CVE-2020-18831 is a high-severity vulnerability in Exiv2, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-08-22.

How severe is CVE-2020-18831?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2020-18831 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Exiv2

CVE-2020-18831

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.

Vulnerability class: Buffer Overflow

EPSS: 0.007 (48.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Exiv2 — versions 0.27.1
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

DiRaltvein/memory-corruption-examples

References

cve@mitre.org (Exploit, Patch, Issue Tracking, Vendor Advisory)
cve@mitre.org (Broken Link)

Frequently asked questions

What is CVE-2020-18831?: CVE-2020-18831 is a high-severity vulnerability in Exiv2, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2023-08-22.
How severe is CVE-2020-18831?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2020-18831 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.