#VU75516 Heap-based buffer overflow in libpng - CVE-2021-4214

Vulnerability identifier: #VU75516

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-4214

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libpng
Universal components / Libraries / Libraries used by multiple products

Vendor: libpng

Description

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

The vulnerability exists due to a boundary error within pngimage.c. A remote attacker can pass specially crafted data to the application, trigger a heap-based buffer overflow and perform a denial of service (DoS) attack.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

libpng: 1.6.0 - 1.6.39

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=2043393
https://access.redhat.com/security/cve/CVE-2021-4214
https://security-tracker.debian.org/tracker/CVE-2021-4214
https://github.com/glennrp/libpng/issues/302
https://security.netapp.com/advisory/ntap-20221020-0001/

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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.