CVE-2009-1956
UnknownEPSS 12.04%
Last modified
CVE-2009-1956 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 12.04% chance of exploitation in the next 30 days.
Description
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Apr-Util | <= 1.3.4 |
| Apache | Http Server | >= 2.2.0, < 2.2.12 |
| Canonical | Ubuntu Linux | 6.06 |
| Canonical | Ubuntu Linux | 8.04 |
| Canonical | Ubuntu Linux | 8.10 |
| Canonical | Ubuntu Linux | 9.04 |
References
- http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.htmlMailing List, Third Party Advisory
- http://marc.info/?l=bugtraq&m=129190899612998&w=2Mailing List, Third Party Advisory
- http://secunia.com/advisories/34724Broken Link
- http://secunia.com/advisories/35284Broken Link
- http://secunia.com/advisories/35395Broken Link
- http://secunia.com/advisories/35487Broken Link
- http://secunia.com/advisories/35565Broken Link
- http://secunia.com/advisories/35710Broken Link
- http://secunia.com/advisories/35797Broken Link
- http://secunia.com/advisories/35843Broken Link
- http://secunia.com/advisories/37221Broken Link
- http://security.gentoo.org/glsa/glsa-200907-03.xmlThird Party Advisory
- http://support.apple.com/kb/HT3937Third Party Advisory
- http://svn.apache.org/viewvc?view=rev&revision=768417Patch, Third Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg1PK88341Third Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg1PK91241Third Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg1PK99478Third Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg27014463Third Party Advisory
- http://www.apache.org/dist/apr/CHANGES-APR-UTIL-1.3Vendor Advisory
- http://www.openwall.com/lists/oss-security/2009/06/06/1Exploit, Mailing List, Patch
- http://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.htmlThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2009-1107.htmlThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2009-1108.htmlThird Party Advisory
- http://www.securityfocus.com/bid/35251Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/usn-786-1Third Party Advisory
- http://www.ubuntu.com/usn/usn-787-1Third Party Advisory
- http://www.vupen.com/english/advisories/2009/1907Permissions Required
- http://www.vupen.com/english/advisories/2009/3184Permissions Required
- https://bugzilla.redhat.com/show_bug.cgi?id=504390Exploit, Issue Tracking, Patch, Third Party Advisory
- https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01173.htmlThird Party Advisory
- https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01201.htmlThird Party Advisory
- https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01228.htmlThird Party Advisory
- http://lists.apple.com/archives/security-announce/2009/Nov/msg00000.htmlMailing List, Third Party Advisory
- http://marc.info/?l=bugtraq&m=129190899612998&w=2Mailing List, Third Party Advisory
- http://secunia.com/advisories/34724Broken Link
- http://secunia.com/advisories/35284Broken Link
- http://secunia.com/advisories/35395Broken Link
- http://secunia.com/advisories/35487Broken Link
- http://secunia.com/advisories/35565Broken Link
- http://secunia.com/advisories/35710Broken Link
- http://secunia.com/advisories/35797Broken Link
- http://secunia.com/advisories/35843Broken Link
- http://secunia.com/advisories/37221Broken Link
- http://security.gentoo.org/glsa/glsa-200907-03.xmlThird Party Advisory
- http://support.apple.com/kb/HT3937Third Party Advisory
- http://svn.apache.org/viewvc?view=rev&revision=768417Patch, Third Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg1PK88341Third Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg1PK91241Third Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg1PK99478Third Party Advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg27014463Third Party Advisory
- http://www.apache.org/dist/apr/CHANGES-APR-UTIL-1.3Vendor Advisory
- http://www.openwall.com/lists/oss-security/2009/06/06/1Exploit, Mailing List, Patch
- http://www.oracle.com/technetwork/topics/security/cpuapr2013-1899555.htmlThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2009-1107.htmlThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2009-1108.htmlThird Party Advisory
- http://www.securityfocus.com/bid/35251Third Party Advisory, VDB Entry
- http://www.ubuntu.com/usn/usn-786-1Third Party Advisory
- http://www.ubuntu.com/usn/usn-787-1Third Party Advisory
- http://www.vupen.com/english/advisories/2009/1907Permissions Required
- http://www.vupen.com/english/advisories/2009/3184Permissions Required
- https://bugzilla.redhat.com/show_bug.cgi?id=504390Exploit, Issue Tracking, Patch, Third Party Advisory
- https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01173.htmlThird Party Advisory
- https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01201.htmlThird Party Advisory
- https://www.redhat.com/archives/fedora-package-announce/2009-June/msg01228.htmlThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2009-1956?
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.
How severe is CVE-2009-1956?
Severity scoring for CVE-2009-1956 is pending analysis. The EPSS model estimates a 12.04% probability of exploitation in the next 30 days.
How do I fix CVE-2009-1956?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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