CVE-2009-1956
What it is
Off-by-one error in the apr_brigade_vprintf function in Apache APR-util before 1.3.5 on big-endian platforms allows remote attackers to obtain sensitive information or cause a denial of service (application crash) via crafted input.
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- Exploit odds
- 12.0% chance of exploitation in the next 30 days (EPSS). Higher than most.
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 12.0% in the next 30 days (EPSS).
- Severity: 6.4 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 12.0% · EPSS, next 30 days
- Weakness
- CWE-189
- Record status
- Modified
Affected
- Apache apr-util ≤ 1.3.4
- Apache Http Server < 2.2.12
- Canonical Ubuntu Linux 6.06
- Canonical Ubuntu Linux 8.04
- Canonical Ubuntu Linux 8.10
- Canonical Ubuntu Linux 9.04
Attack profile CVSS 2.0 · 6.4
- Attack vector
- Network
- Complexity
- Low
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- None
- Availability
- Partial
Raw vector
AV:N/AC:L/Au:N/C:P/I:N/A:P
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2009-1956.md and follow it. Check whether this project is affected by CVE-2009-1956. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- http://svn.apache.org/viewvc?view=rev&revision=768417
- http://www.apache.org/dist/apr/CHANGES-APR-UTIL-1.3
- http://www.openwall.com/lists/oss-security/2009/06/06/1
- https://bugzilla.redhat.com/show_bug.cgi?id=504390
- http://svn.apache.org/viewvc?view=rev&revision=768417
- http://www.apache.org/dist/apr/CHANGES-APR-UTIL-1.3
- http://www.openwall.com/lists/oss-security/2009/06/06/1
- https://bugzilla.redhat.com/show_bug.cgi?id=504390
References
- http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.html
- http://marc.info/?l=bugtraq&m=129190899612998&w=2
- http://secunia.com/advisories/34724
- http://secunia.com/advisories/35284
- http://secunia.com/advisories/35395
- http://secunia.com/advisories/35487
- http://secunia.com/advisories/35565
- http://secunia.com/advisories/35710
- http://secunia.com/advisories/35797
- http://secunia.com/advisories/35843
- http://secunia.com/advisories/37221
- http://security.gentoo.org/glsa/glsa-200907-03.xml
- http://support.apple.com/kb/HT3937
- http://svn.apache.org/viewvc?view=rev&revision=768417
- http://www-01.ibm.com/support/docview.wss?uid=swg1PK88341
- http://www-01.ibm.com/support/docview.wss?uid=swg1PK91241
- http://www-01.ibm.com/support/docview.wss?uid=swg1PK99478
- http://www-01.ibm.com/support/docview.wss?uid=swg27014463
- http://www.apache.org/dist/apr/CHANGES-APR-UTIL-1.3
- http://www.mail-archive.com/dev%40apr.apache.org/msg21591.html
- http://www.mail-archive.com/dev%40apr.apache.org/msg21592.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:131
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
- http://www.openwall.com/lists/oss-security/2009/06/06/1
- http://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.html