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Fencer Vulns
medium 5.5

CVE-2018-1000085 json

ClamAV version version 0.99.3 contains a Out of bounds heap memory read vulnerability in XAR parser, function xar_hash_check() that can res…

published 2018-03-13 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-1827

cvss
5.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

ClamAV version version 0.99.3 contains a Out of bounds heap memory read vulnerability in XAR parser, function xar_hash_check() that can result in Leaking of memory, may help in developing exploit chains.. This attack appear to be exploitable via The victim must scan a crafted XAR file. This vulnerability appears to have been fixed in after commit d96a6b8bcc7439fa7e3876207aa0a8e79c8451b6.

Patch / fix

  • clamav Debian 14, Debian 13, Debian 12 0.99.3~beta1+dfsg-1

debian advisories DEBIAN-CVE-2018-1000085

  • clamav Ubuntu 14.04 LTS 0.99.4+addedllvm-0ubuntu0.14.04.1
  • clamav Ubuntu 16.04 LTS 0.99.4+addedllvm-0ubuntu0.16.04.1

ubuntu advisories UBUNTU-CVE-2018-1000085

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • clamav SLES 12 SP3, SLES 12 SP2-BCL, SLED 12 SP3 +8 more 0.100.1-33.15.2
  • clamav SLES for SAP 11 SP4, SLES 11 SP4, SLES 11 SP3-TERADATA +2 more 0.99.4-0.20.7.2
  • clamav SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2 +4 more 0.99.4-33.9.1

suse advisories SUSE-SU-2018:2323-2SUSE-SU-2018:2323-1SUSE-SU-2018:0863-1SUSE-SU-2018:0809-1

  • clamav openSUSE Tumbleweed 0.103.3-1.4

opensuse advisories openSUSE-SU-2024:10685-1

  • clamav Alpine 3.24, Alpine 3.23, Alpine 3.22 +18 more 0.99.4-r0

alpine advisories ALPINE-CVE-2018-1000085

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • clamav Arch Linux 0.99.4-1

arch linux advisories AVG-602

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-1000085 updated cvss 7.5

clamav: Out-of-bounds heap read in XAR parser

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.61% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.5 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.