SSH Communications Security Information for VU#368819

Double Free Bug in zlib Compression Library Corrupts malloc's Internal Data Structures


Not Affected

Vendor Statement

SSH Secure Shell is not vulnerable to zlib double free bug.

No version of SSH Secure Shell software is vulnerable to the "Double Free Bug in zlib Compression Library" discussed in CERT Advisory CA-2002-07.

All SSH Secure Shell versions, including SSH2 protocol clients and servers, close the connection immediately with a fatal cleanup call without any further calls to zlib when a call to zlib's inflate() returns something else than Z_OK.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Vendor References



The CERT/CC has no additional comments at this time.

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