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Fencer Vulns
low 3.3

CVE-2018-1056 json

An out-of-bounds heap buffer read flaw was found in the way advancecomp before 2.1-2018/02 handled processing of ZIP files.

published 2018-07-27 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-11709

cvss
3.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.4%
EPSS 1.4% chance of exploitation in 30 days, percentile 73%
public exploits
0
none known

Summary

An out-of-bounds heap buffer read flaw was found in the way advancecomp before 2.1-2018/02 handled processing of ZIP files. An attacker could potentially use this flaw to crash the advzip utility by tricking it into processing crafted ZIP files.

Patch / fix

  • advancemame advancecomp 2.1
  • advancecomp Debian 14, Debian 13, Debian 12 2.1-1

debian advisories DEBIAN-CVE-2018-1056

  • advancecomp Ubuntu 14.04 LTS 1.18-1ubuntu0.1
  • advancecomp Ubuntu 16.04 LTS 1.20-1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2018-1056

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

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-2018-1056 updated cvss 3.3

advancecomp: Heap buffer overflow in zip.cc:zip_entry::load_cent() allows for denial of service or unspecified impact via crafted ZIP file

  • Red Hat Enterprise Linux 7 advancecomp
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 8 advancecomp
    affected: no fix available “Fix deferred”
  • Red Hat Enterprise Linux OpenStack Platform 6 (Juno) Installer advancecomp Red Hat Satellite 6 advancecomp
    affected: no fix planned “Will not fix”

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

1.42% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.debian.org https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=889270 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.0 3.3 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • amadvance advancecomp:

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.