TI-2011-00422 Aliases CVE-2011-0495 GHSA-27ph-x57w-v4gm

Stack-based buffer overflow in the ast_uri_encode function in main/utils.c in Asterisk…

LOW 34CWE-787Published 2011-01-20 · Updated 2024-08-06

Key facts

Attack vector: Network
Privileges required: Low
User interaction: — Not recorded in CVSS 2.0
Attack complexity: Medium
Impact type: Code execution
Confidentiality · integrity · availability: Partial · Partial · Partial
Fix status: No fix listed

Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

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.

Why it matters now

EPSS 0.04206 91st percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 8

CPE	Versions	Role	Vendor
cpe:2.3:a:digium:asterisk:::::business:::*	before c.3.6.2	Vulnerable	Digium
cpe:2.3:a:digium:asterisk::::::::	1.2.0 – 1.2.40; 1.4.0 to before 1.4.38.1; 1.4.39 to before 1.4.39.1; 1.6.1 to before 1.6.1.21; 1.6.2 to before 1.6.2.15.1; 1.6.2.16 to before 1.6.2.16.1; 1.8.0 to before 1.8.1.2; 1.8.2 to before 1.8.2.2	Vulnerable	Digium
cpe:2.3:a:digium:asterisknow:1.5:::::::*	1.5	Vulnerable	Digium
cpe:2.3:o:fedoraproject:fedora:13:::::::*	13	Vulnerable	Fedoraproject
cpe:2.3:o:fedoraproject:fedora:14:::::::*	14	Vulnerable	Fedoraproject
cpe:2.3:o:debian:debian_linux:6.0:::::::*	6.0	Vulnerable	Debian
cpe:2.3:o:digium:s800i_firmware:1.2.0:::::::*	1.2.0	Vulnerable	Digium
cpe:2.3:h:digium:s800i:-:::::::*	not specified by NVD	Running on	Digium

cpe:2.3:a:digium:asterisk:*:*:*:*:business:*:*:* Versions before c.3.6.2 Vulnerable ·Digium
cpe:2.3:a:digium:asterisk:*:*:*:*:*:*:*:* Versions 1.2.0 – 1.2.40; 1.4.0 to before 1.4.38.1; 1.4.39 to before 1.4.39.1; 1.6.1 to before 1.6.1.21; 1.6.2 to before 1.6.2.15.1; 1.6.2.16 to before 1.6.2.16.1; 1.8.0 to before 1.8.1.2; 1.8.2 to before 1.8.2.2 Vulnerable ·Digium
cpe:2.3:a:digium:asterisknow:1.5:*:*:*:*:*:*:* Versions 1.5 Vulnerable ·Digium
cpe:2.3:o:fedoraproject:fedora:13:*:*:*:*:*:*:* Versions 13 Vulnerable ·Fedoraproject
cpe:2.3:o:fedoraproject:fedora:14:*:*:*:*:*:*:* Versions 14 Vulnerable ·Fedoraproject
cpe:2.3:o:debian:debian_linux:6.0:*:*:*:*:*:*:* Versions 6.0 Vulnerable ·Debian
cpe:2.3:o:digium:s800i_firmware:1.2.0:*:*:*:*:*:*:* Versions 1.2.0 Vulnerable ·Digium
cpe:2.3:h:digium:s800i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Digium

Remediation

No fixed version listed by the sources yet.

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2011-0495
2026-10-03 Alias added: GHSA-27ph-x57w-v4gm

References

Patch 1

http://downloads.asterisk.org/pub/security/AST-2011-001-1.6.2.diff

Advisory 4

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences