• February 2, 2022
• Advisories

EIP-1a8a439f

A vulnerability exists in Zlibc that allows a local attacker to execute arbitrary code with elevated privileges through manipulation of the LD_ZLIB_CONFFILE and LD_ZLIB_UNCOMPRESSOR environment variables when calling setuid binaries.

Vulnerability Identifiers

• Exodus Intelligence: EIP-1a8a439f
• MITRE CVE: N/A

Vulnerability Metrics

• CVSSv2 Score: 6.6

Vendor References

• This vulnerability has been addressed in Zlibc version 0.9l.
• https://www.zlibc.linux.lu/download.html
• https://zlibc.linux.lu/mailman3/hyperkitty/list/[email protected]/

Discovery Credit

• Exodus Intelligence

Disclosure Timeline

• Disclosed to affected vendor: January 5th, 2022
• Disclosed to public: February 2nd, 2022

Further Information

Readers of this advisory who are interested in receiving further details around the vulnerability, mitigations, detection guidance, and more can contact us at [email protected].

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