Netpbm before 10.86.51, 11.02.30, and 11.15.08 Integer Overflow in winicontopam

Summary

Netpbm before 10.86.51, 11.02.30, and 11.15.08 contains an integer overflow vulnerability in winicontopam that allows attackers to corrupt heap memory via oversized ICO/CUR dimensions. Attackers can supply a crafted icon file with width or height above 32767, wrapping int16_t loop counters into negative row buffer indices to cause crashes or potential code execution.

Remediation

1. Inventory every Netpbm Netpbm deployment, including staging.
2. Upgrade Netpbm Netpbm to the fixed version for your release line, listed under Affected versions.
3. Confirm the running version after the upgrade.

References

• Patchhttps://sourceforge.net/p/netpbm/code/5335/
• Advisoryhttps://www.vulncheck.com/advisories/netpbm-before-10.86.51-11.02.30-and-11.15.08-integer-overflow-in-winicontopam
• Referencehttps://svn.code.sf.net/p/netpbm/code/!svn/bc/5334/trunk/converter/other/winicontopam.c
• Referencehttps://svn.code.sf.net/p/netpbm/code/!svn/bc/5357/advanced/doc/HISTORY
• Referencehttps://svn.code.sf.net/p/netpbm/code/!svn/bc/5358/stable/doc/HISTORY
• Referencehttps://svn.code.sf.net/p/netpbm/code/!svn/bc/5371/super_stable/doc/HISTORY