GNU Binutils thru 2.46 readelf contains a vulnerability that leads to an invalid pointer free when processing a crafted ELF binary with malformed relocation or symbol data. If dump_relocations returns early due to parsing errors, the internal all_relocations array may remain partially uninitialized. Later, process_got_section_contents() may attempt to free an invalid r_symbol pointer, triggering memory corruption checks in glibc and causing the program to terminate with SIGABRT.
No evidence of further memory corruption or code execution was observed; the impact is limited to denial of service. NOTE: this is disputed by third parties because the observed behavior occurred only in pre-release code and did not affect any tagged version.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Gnu Binutils
cpe:2.3:a:gnu:binutils:*:*:*:*:*:*:*:*
|
— |
<= 2.46
|
References 5
https://sourceware.org/bugzilla/show_bug.cgi?id=33700
cve@mitre.org
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=ea4bc025abdba85a90e2…
cve@mitre.org
https://sourceware.org/bugzilla/show_bug.cgi?id=33698
cve@mitre.org
https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=81e90cf63a10ad117…
cve@mitre.org
https://sourceware.org/git/?p=binutils-gdb.git;a=commitdiff;h=ea4bc025abdba85a9…
cve@mitre.org