Remote code execution in zlib

1) Heap-based buffer overflow

EUVDB-ID: #VU82299

Risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-45853

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the zipOpenNewFileInZip4_64() function from MiniZip. A remote attacker can create a specially crafted archive, trick the victim into opening it, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Zlib: 0.8 - 1.3

CPE2.3

• cpe:2.3:a:gnu:zlib:0.8:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:zlib:0.9:*:*:*:*:*:*:*
• cpe:2.3:a:gnu:zlib:0.71:*:*:*:*:*:*:*

External links

https://www.winimage.com/zLibDll/minizip.html
https://github.com/madler/zlib/pull/843
https://chromium.googlesource.com/chromium/src/+/d709fb23806858847131027da95ef4c548813356
https://chromium.googlesource.com/chromium/src/+/de29dd6c7151d3cd37cb4cf0036800ddfb1d8b61
https://github.com/madler/zlib/blob/ac8f12c97d1afd9bafa9c710f827d40a407d3266/contrib/README.contrib#L1-L4
https://www.openwall.com/lists/oss-security/2023/10/20/9

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.