Denial of service in Libsixel



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-45340
CWE-ID CWE-476
Exploitation vector Network
Public exploit N/A
Vulnerable software
 libsixel
Universal components / Libraries / Libraries used by multiple products

Vendor libsixel

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) NULL pointer dereference

EUVDB-ID: #VU102567

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-45340

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the stb_image.h component. A remote attacker can trigger denial of service conditions via a crafted PICT file.

Mitigation

Install update from vendor's website.

Vulnerable software versions

libsixel: 0.11.0 - 1.10.3

CPE2.3 External links

https://github.com/libsixel/libsixel/issues/51


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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