Out-of-bounds Read in Mercurial

CVE-2018-17983

cext/manifest.c in Mercurial before 4.7.2 has an out-of-bounds read during parsing of a malformed manifest entry.

Vulnerability class: Buffer Overflow

EPSS: 0.020 (79.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.

Affected products

Mercurial
N/a — versions n/a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

References

cve@mitre.org (Patch, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2018-17983?: CVE-2018-17983 is a critical-severity vulnerability in Mercurial, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2018-10-04.
How severe is CVE-2018-17983?: Critical severity. CVSS v3 base score is 9.1 out of 10.