CVE-2023-44821
Buffer Overflow vulnerability in gifsicle v.1.92 allows a remote attacker to cause a denial of...
Gifsicle through 1.94, if deployed in a way that allows untrusted input to affect Gif_Realloc calls, might allow a denial of service (memory consumption). NOTE: this has been disputed by multiple parties because the Gifsicle code is not commonly used for unattended operation in which new input arrives for a long-running process, does not ship with functionality to link it into another application as a library, and does not have realistic use cases in which an adversary controls the entire command line.
Attack profile
How easy it is to exploit
- Attack vector
- Local
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
5.5
Gifsicle through 1.94, if deployed in a way that allows untrusted input to affect Gif_Realloc calls, might allow a denial of service (memory consumption). NOTE: this has been disputed by multiple parties because the Gifsicle code is not commonly used for unattended operation in which new input arrives for a long-running process, does not ship with functionality to link it into another application as a library, and does not have realistic use cases in which an adversary controls the entire command line.
- Record
CVE-2023-44821- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
CVE List No score
Gifsicle through 1.94, if deployed in a way that allows untrusted input to affect Gif_Realloc calls, might allow a denial of service (memory consumption). NOTE: this has been disputed by multiple parties because the Gifsicle code is not commonly used for unattended operation in which new input arrives for a long-running process, does not ship with functionality to link it into another application as a library, and does not have realistic use cases in which an adversary controls the entire command line.
- Record
CVE-2023-44821- Updated
- 2026-11-02
EUVDEUVD-2023-49144 No score
Gifsicle through 1.94, if deployed in a way that allows untrusted input to affect Gif_Realloc calls, might allow a denial of service (memory consumption). NOTE: this has been disputed by multiple parties because the Gifsicle code is not commonly used for unattended operation in which new input arrives for a long-running process, does not ship with functionality to link it into another application as a library, and does not have realistic use cases in which an adversary controls the entire command line.
- Record
EUVD-2023-49144- Updated
- 2026-11-02
GitHub AdvisoriesGHSA-vqf3-8wjf-vm68
5.5
Buffer Overflow vulnerability in gifsicle v.1.92 allows a remote attacker to cause a denial of...
Buffer Overflow vulnerability in gifsicle v.1.92 allows a remote attacker to cause a denial of service via the --crop parameter in the command line parameters.
- Record
GHSA-vqf3-8wjf-vm68- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-401
- Updated
- 2026-11-02
OSVDEBIAN-CVE-2023-44821
5.5
Gifsicle through 1.94, if deployed in a way that allows untrusted input to affect Gif_Realloc calls, might allow a denial of service (memory consumption). NOTE: this has been disputed by multiple parties because the Gifsicle code is not commonly used for unattended operation in which new input arrives for a long-running process, does not ship with functionality to link it into another application as a library, and does not have realistic use cases in which an adversary controls the entire command line.
- Record
DEBIAN-CVE-2023-44821- CVSS 3.1
- 5.5 Medium
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSV No score
Gifsicle through 1.94, if deployed in a way that allows untrusted input to affect Gif_Realloc calls, might allow a denial of service (memory consumption). NOTE: this has been disputed by multiple parties because the Gifsicle code is not commonly used for unattended operation in which new input arrives for a long-running process, does not ship with functionality to link it into another application as a library, and does not have realistic use cases in which an adversary controls the entire command line.
- Record
CVE-2023-44821- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
gifsicleDebian:12 |
All versions, plus listed versions 1.93-21.94-11.95-11.95-21.96-11.97-11.98-1 |
None known |
gifsicleDebian:13 |
All versions, plus listed versions 1.96-11.97-11.98-1 |
None known |
gifsicleDebian:14 |
All versions, plus listed versions 1.96-11.97-11.98-1 |
None known |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2023-44821 is a medium vulnerability (CVSS 5.5) in Lcdf Gifsicle, published October 9, 2023. Its validity is disputed. EPSS puts the chance of exploitation in the next 30 days at 0.33%, the 26th percentile.
References
github.com/kohler/gifsicle/issues/195
github.com/kohler/gifsicle/issues/65
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3WLTXJS6AIKPGVOAJ7EYC4HL3NEG6CGF
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3I6Z7VAHUYX3Q4DULJ76NFD2CIFZJYH5
lists.fedoraproject.org/archives/list/[email protected]/message/3WLTXJS6AIKPGVOAJ7EYC4HL3NEG6CGF
nvd.nist.gov/vuln/detail/CVE-2023-44821
github.com/advisories/GHSA-vqf3-8wjf-vm68
github.com/CVEProject/cvelistV5/tree/main/cves/2023/44xxx/CVE-2023-44821.json
security-tracker.debian.org/tracker/CVE-2023-44821