CVE-2005-0893
HighSummary
In the modes.c file in smail 3.2.0.120, signal handlers are implemented using unsafe library calls. This may allow attackers to execute arbitrary code via signal handler race conditions, possibly using xmalloc.
Risk Assessment
The risk involves potential remote code execution by an attacker, which could lead to full compromise of the mail system and breach of data confidentiality and integrity.
Recommendation
Immediately update smail to a version without this vulnerability or apply a patch that removes unsafe calls from signal handlers.
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Original NVD description (English source)
modes.c in smail 3.2.0.120 implements signal handlers with certain unsafe library calls, which may allow attackers to execute arbitrary code via signal handler race conditions, possibly using xmalloc.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS