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

Exp

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.

Published: 2023-11-24 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2023-6277 is rated High Exploit Risk (65.7/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.82%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2023-6277

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2023-6277

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 3.75% 1.82% -1.93%
2 2026-03-21 0.42% 3.75% +3.33%
3 2025-11-21 — 0.42% —

Full EPSS history (13 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2023-6277

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]

Weakness enumeration for CVE-2023-6277

OS Trackers for CVE-2023-6277

vendor priority summary link
debian not yet assigned CVE-2023-6277 not yet assigned priority: Debian including 1 source packages (tiff), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 3, open 2. https://security-tracker.debian.org/tracker/CVE-2023-6277
redhat medium — https://access.redhat.com/security/cve/CVE-2023-6277
suse medium CVE-2023-6277 severity moderate: SUSE including 7 source package names (libtiff-devel, libtiff-devel-32bit, …), 157 product×package rows across 49 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 7.1, … (49 product lines)): Known Not Affected 157. https://www.suse.com/security/cve/CVE-2023-6277/
ubuntu low CVE-2023-6277 low priority: Ubuntu including 1 source packages (tiff), 9 status rows across 9 suites (bionic, focal, jammy, lunar, mantic, noble, trusty, upstream, xenial): released 7, ignored 1, not-affected 1. https://ubuntu.com/security/CVE-2023-6277

Affected software / configurations for CVE-2023-6277

Vendor Product Version Raw CPE
libtiff libtiff — cpe:2.3:a:libtiff:libtiff:-:*:*:*:*:*:*:*
fedoraproject fedora 38 cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:*

References for CVE-2023-6277

URL Tags
https://access.redhat.com/security/cve/CVE-2023-6277 Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2251311 Issue Tracking Patch Third Party Advisory
https://gitlab.com/libtiff/libtiff/-/issues/614 Exploit Issue Tracking Patch Vendor Advisory
https://gitlab.com/libtiff/libtiff/-/merge_requests/545 Patch Vendor Advisory
http://seclists.org/fulldisclosure/2024/Jul/16
http://seclists.org/fulldisclosure/2024/Jul/17
http://seclists.org/fulldisclosure/2024/Jul/18
http://seclists.org/fulldisclosure/2024/Jul/19
http://seclists.org/fulldisclosure/2024/Jul/20
http://seclists.org/fulldisclosure/2024/Jul/21
http://seclists.org/fulldisclosure/2024/Jul/22
http://seclists.org/fulldisclosure/2024/Jul/23
https://lists.fedoraproject.org/archives/list/[email protected]/message/WJIN6DTSL3VODZUGWEUXLEL5DR53EZMV/
https://lists.fedoraproject.org/archives/list/[email protected]/message/Y7ZGN2MZXJ6E57W3L4YBM3ZPAU3T7T5C/
https://security.netapp.com/advisory/ntap-20240119-0002/
https://support.apple.com/kb/HT214116
https://support.apple.com/kb/HT214117
https://support.apple.com/kb/HT214118
https://support.apple.com/kb/HT214119
https://support.apple.com/kb/HT214120
https://support.apple.com/kb/HT214122
https://support.apple.com/kb/HT214123
https://support.apple.com/kb/HT214124
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