CVE-2013-2852
Description
Format string vulnerability in the b43_request_firmware function in drivers/net/wireless/b43/main.c in the Broadcom B43 wireless driver in the Linux kernel through 3.9.4 allows local users to gain privileges by leveraging root access and including format string specifiers in an fwpostfix modprobe parameter, leading to improper construction of an error message.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
Linux Kernel 3.3.5 - 'b43' Wireless Driver Privilege Escalation
OS impact
Linux kernel Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | 3.0.83 |
Ubuntu Affected 4 releases
| Version | Status | Fixed in |
|---|---|---|
| 13.04 | Affected | — |
| 12.10 | Affected | — |
| 12.04 | Affected | — |
| 10.04 | Affected | — |
Debian Mixed 6 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 3.9.8-1 |
| sid | Fixed | 3.9.8-1 |
| forky | Fixed | 3.9.8-1 |
| bullseye | Fixed | 3.9.8-1 |
| bookworm | Fixed | 3.9.8-1 |
| 6.0 | Affected | — |
References
- http://git.kernel.org/cgit/linux/kernel/git/linville/wireless.git/commit/?id=9538cbaab6e8b8046039b4b2eb6c9d614dc782bd
- http://lists.opensuse.org/opensuse-security-announce/2013-09/msg00003.html
- http://lists.opensuse.org/opensuse-updates/2013-12/msg00129.html
- http://rhn.redhat.com/errata/RHSA-2013-1051.html
- http://rhn.redhat.com/errata/RHSA-2013-1450.html
- http://www.debian.org/security/2013/dsa-2766
- http://www.openwall.com/lists/oss-security/2013/06/06/13
- http://www.ubuntu.com/usn/USN-1899-1
- http://www.ubuntu.com/usn/USN-1900-1
- http://www.ubuntu.com/usn/USN-1914-1
- http://www.ubuntu.com/usn/USN-1915-1
- http://www.ubuntu.com/usn/USN-1916-1
- http://www.ubuntu.com/usn/USN-1917-1
- http://www.ubuntu.com/usn/USN-1918-1
- http://www.ubuntu.com/usn/USN-1919-1
- http://www.ubuntu.com/usn/USN-1920-1
- http://www.ubuntu.com/usn/USN-1930-1
- https://bugzilla.redhat.com/show_bug.cgi?id=969518
- https://security-tracker.debian.org/tracker/CVE-2013-2852
CWEs
CWE-134
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.