Description
radare2 is a UNIX-like reverse engineering framework and command-line toolset. Prior to 6.2.0, radare2's ELF PN_XNUM handling was vulnerable because the ELF parser allocated the program-header array using the resolved PN_XNUM count but several consumers still iterated with the original e_phnum value of 65535. The vulnerability is triggered by processing a crafted ELF file with e_phnum = 0xffff and a much smaller resolved count in shdr[0].sh_info. Consumers iterated beyond the allocated program-header array. This can cause a heap out-of-bounds read and process termination, resulting in denial of service; memory disclosure and code execution have not been demonstrated. This issue is fixed in version 6.2.0.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
radareorg radare2
< 6.2.0affected
References
- https://github.com/radareorg/radare2/security/advisories/GHSA-jqfq-hvcp-xh4p ↗
- https://github.com/radareorg/radare2/issues/26223 ↗
- https://github.com/radareorg/radare2/pull/26178 ↗
- https://github.com/radareorg/radare2/commit/9449b07579c19b6b187c1a0918fbec2cef1a036e ↗
- https://github.com/radareorg/radare2/releases/tag/6.2.0 ↗