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Public proof of conceptFix available

CVE-2021-40403

A public proof of concept exists; no exploitation attested.

  • Published2022-02-04
  • WeaknessCWE-456 · CWE-909

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

An information disclosure vulnerability exists in the pick-and-place rotation parsing functionality of Gerbv 2.7.0 and dev (commit b5f1eacd), and Gerbv forked 2.8.0. A specially-crafted pick-and-place file can exploit the missing initialization of a structure to leak memory contents. An attacker can provide a malicious file to trigger this vulnerability.

Timeline

dates in UTC
  1. 2022-02-0423:15CVE publishedNVD

Versions per branch

NVD
Gerbv project gerbv
BranchAffectedFixed in
2.7= 2.7.0no fix published
2.8= 2.8.0no fix published
Debian debian linux
BranchAffectedFixed in
11.0= 11.0no fix published
Fedoraproject fedora
BranchAffectedFixed in
36.x= 36no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • gerbvUbuntu:Pro:22.04:LTSall versions · fixed in 2.8.2-1ubuntu0.1~esm1
  • gerbvUbuntu:Pro:18.04:LTSall versions · fixed in 2.6.1-3ubuntu0.1~esm1
  • gerbvUbuntu:Pro:16.04:LTSall versions · fixed in 2.6.0-1ubuntu0.16.04.1~esm1
  • gerbvUbuntu:Pro:14.04:LTSall versions · fixed in 2.6.0-1ubuntu0.14.04.1~esm1
  • gerbvUbuntu:20.04:LTSall versions · fixed in 2.7.0-1ubuntu0.1
  • gerbvMageia:8all versions · fixed in 2.7.0-3.1.mga8
  • gerbvDebian:13all versions · fixed in 2.9.2-1
  • gerbvDebian:12all versions · fixed in 2.9.2-1

2 more package ranges on OSV.dev

Vendor advisories

  • CVE-2021-40403 Red Hat Product Security

    gerbv: pick-and-place rotation parsing use of uninitialized variable vulnerability

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionpoc2025-04-15
  • NVDCVSS 3.16.3read 2026-10-23
  • CNACVSS 3.05.8known since 2026-10-23
  • NVDCVSS 2.04.3read 2026-10-23
  • CNAweakness (CWE)CWE-456known since 2026-10-23
  • NVDweakness (CWE)CWE-909read 2026-10-23
  • FIRST EPSSEPSS score1.1 %2026-11-08
  • OSVaffected packages—
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
Published
2022-02-04
Last Modified
2026-06-17
NVD status
Modified
GitHub Advisory
GHSA-hmq5-vc89-4m9m

Frequently asked questions

What is CVE-2021-40403?

An information disclosure vulnerability exists in the pick-and-place rotation parsing functionality of Gerbv 2.7.0 and dev (commit b5f1eacd), and Gerbv forked 2.8.0. A specially-crafted pick-and-place file can exploit the missing initialization of a structure to leak memory contents. An attacker can provide a malicious file to trigger this vulnerability.

Is CVE-2021-40403 actively exploited?

A proof-of-concept exploit exists for CVE-2021-40403, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2021-40403?

CVE-2021-40403 has a CVSS v3 base score of 6.3 (MEDIUM severity), with vector string CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N.

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