# CVE-2023-6277: Libtiff: out-of-memory in tiffopen via a craft file

Status: published. Published: 2023-11-24. Updated: 2026-11-05.

An out-of-memory flaw was found in libtiff. Passing a crafted tiff file to TIFFOpen() API may allow a remote attacker to cause a denial of service via a craft input with size smaller than 379 KB.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Red Hat / Red Hat Enterprise Linux 6 (libtiff): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (compat-libtiff3): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (libtiff): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (compat-libtiff3): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (libtiff): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (libtiff): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 1.82% as of 2026-11-04; percentile 78.87%

- SSVC: exploitation poc; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-400

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/security/cve/CVE-2023-6277 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2251311 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://gitlab.com/libtiff/libtiff/-/issues/614 (CNA: redhat)

- https://gitlab.com/libtiff/libtiff/-/merge_requests/545 (CNA: redhat)

- https://access.redhat.com/security/cve/CVE-2023-6277 (ADP: CVE; vdb-entry, x_refsource_REDHAT, x_transferred)

- https://bugzilla.redhat.com/show_bug.cgi?id=2251311 (ADP: CVE; issue-tracking, x_refsource_REDHAT, x_transferred)

- https://gitlab.com/libtiff/libtiff/-/issues/614 (ADP: CVE; x_transferred)

- https://gitlab.com/libtiff/libtiff/-/merge_requests/545 (ADP: CVE; x_transferred)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WJIN6DTSL3VODZUGWEUXLEL5DR53EZMV/ (ADP: CVE; x_transferred)

- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y7ZGN2MZXJ6E57W3L4YBM3ZPAU3T7T5C/ (ADP: CVE; x_transferred)

- https://security.netapp.com/advisory/ntap-20240119-0002/ (ADP: CVE; x_transferred)

- https://support.apple.com/kb/HT214119 (ADP: CVE; x_transferred)

- https://support.apple.com/kb/HT214123 (ADP: CVE; x_transferred)

- https://support.apple.com/kb/HT214122 (ADP: CVE; x_transferred)

- https://support.apple.com/kb/HT214117 (ADP: CVE; x_transferred)

- https://support.apple.com/kb/HT214118 (ADP: CVE; x_transferred)

- https://support.apple.com/kb/HT214116 (ADP: CVE; x_transferred)

- https://support.apple.com/kb/HT214120 (ADP: CVE; x_transferred)

- https://support.apple.com/kb/HT214124 (ADP: CVE; x_transferred)

- http://seclists.org/fulldisclosure/2024/Jul/16 (ADP: CVE; x_transferred)

- http://seclists.org/fulldisclosure/2024/Jul/23 (ADP: CVE; x_transferred)

- http://seclists.org/fulldisclosure/2024/Jul/21 (ADP: CVE; x_transferred)

- http://seclists.org/fulldisclosure/2024/Jul/20 (ADP: CVE; x_transferred)

- http://seclists.org/fulldisclosure/2024/Jul/17 (ADP: CVE; x_transferred)

- http://seclists.org/fulldisclosure/2024/Jul/22 (ADP: CVE; x_transferred)

- http://seclists.org/fulldisclosure/2024/Jul/18 (ADP: CVE; x_transferred)

- http://seclists.org/fulldisclosure/2024/Jul/19 (ADP: CVE; x_transferred)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2023-6277; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2023-6277; retrieved 2026-11-05; source updated Not reported

Revision: 6ff6d9dcb77291dd20c162dd86ee7c3df8f48f218edc23821a69e91a78ded35e

Canonical: https://y2.dev/cve/CVE-2023-6277

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