#VU84043 Double Free in Zlib - CVE-2002-0059

Vulnerability identifier: #VU84043

Vulnerability risk: Medium

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

CVE-ID: CVE-2002-0059

CWE-ID: CWE-415

Exploitation vector: Network

Exploit availability: No

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

Vendor: GNU

Description

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

The vulnerability exists due to a boundary error. A remote attacker can pass specially crafted data to the application, trigger double free error and execute arbitrary code on the target system.

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

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Zlib: 0.8 - 1.3

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External links
https://www.redhat.com/support/errata/RHSA-2002-026.html
https://www.linux-mandrake.com/en/security/2002/MDKSA-2002-023.php
https://www.redhat.com/support/errata/RHSA-2002-027.html
https://www.cert.org/advisories/CA-2002-07.html
https://www.kb.cert.org/vuls/id/368819
https://www.debian.org/security/2002/dsa-122
https://frontal2.mandriva.com/security/advisories?name=MDKSA-2002:022
https://www.caldera.com/support/security/advisories/CSSA-2002-014.1.txt
ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-015.1.txt
https://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000469
https://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBTL0204-030
https://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBTL0204-036
https://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBTL0204-037
https://www.linux-mandrake.com/en/security/2002/MDKSA-2002-024.php3
https://www.securityfocus.com/bid/4267
https://exchange.xforce.ibmcloud.com/vulnerabilities/8427

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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.