CVE-2011-0495
Stack-based buffer overflow in the ast_uri_encode function in main/utils.c in Asterisk Open Source before 1.4.38.1, 1.4.39.1, 1.6.1.21, 1.6.2.15.1, 1.6.2.16.1, 1.8.1.2, 1.8.2.; and Business Edition before C.3.6.2; when running in pedantic mode allows…
Does this matter?
Lower severity and a low EPSS score (4.21%). Track it; it rarely justifies an emergency change on its own.
Description
Stack-based buffer overflow in the ast_uri_encode function in main/utils.c in Asterisk Open Source before 1.4.38.1, 1.4.39.1, 1.6.1.21, 1.6.2.15.1, 1.6.2.16.1, 1.8.1.2, 1.8.2.; and Business Edition before C.3.6.2; when running in pedantic mode allows remote authenticated users to execute arbitrary code via crafted caller ID data in vectors involving the (1) SIP channel driver, (2) URIENCODE dialplan function, or (3) AGI dialplan function.
- CVSS 2.0
- 6.0 MEDIUMAV:N/AC:M/Au:S/C:P/I:P/A:P
- EPSS
- 4.21% probability · 91th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- digium/asterisk · digium/asterisknow · fedoraproject/fedora · debian/debian linux · digium/s800i firmware
- Source
- cve@mitre.org
EPSS 4.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://downloads.asterisk.org/pub/security/AST-2011-001-1.6.2.diffPatch, Vendor Advisory
- http://downloads.asterisk.org/pub/security/AST-2011-001.htmlVendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053689.htmlThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053713.htmlThird Party Advisory
- http://osvdb.org/70518Broken Link
- http://secunia.com/advisories/42935Third Party Advisory
- http://secunia.com/advisories/43119Third Party Advisory
- http://secunia.com/advisories/43373Third Party Advisory
- http://www.debian.org/security/2011/dsa-2171Third Party Advisory
- http://www.securityfocus.com/archive/1/515781/100/0/threadedThird Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/45839Third Party Advisory, VDB Entry
- http://www.vupen.com/english/advisories/2011/0159Permissions Required
- http://www.vupen.com/english/advisories/2011/0281Permissions Required
- http://www.vupen.com/english/advisories/2011/0449Permissions Required
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64831Third Party Advisory, VDB Entry
- http://downloads.asterisk.org/pub/security/AST-2011-001-1.6.2.diffPatch, Vendor Advisory
- http://downloads.asterisk.org/pub/security/AST-2011-001.htmlVendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053689.htmlThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-February/053713.htmlThird Party Advisory
- http://osvdb.org/70518Broken Link
- http://secunia.com/advisories/42935Third Party Advisory
- http://secunia.com/advisories/43119Third Party Advisory
- http://secunia.com/advisories/43373Third Party Advisory
- http://www.debian.org/security/2011/dsa-2171Third Party Advisory
- http://www.securityfocus.com/archive/1/515781/100/0/threadedThird Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/45839Third Party Advisory, VDB Entry
- http://www.vupen.com/english/advisories/2011/0159Permissions Required
- http://www.vupen.com/english/advisories/2011/0281Permissions Required
- http://www.vupen.com/english/advisories/2011/0449Permissions Required
- https://exchange.xforce.ibmcloud.com/vulnerabilities/64831Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.