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CVE-2009-0871

UnknownEPSS 2.57%

Last modified

CVE-2009-0871 is a vulnerability of currently unknown severity. The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6; 1.6.1 before 1.6.1.0-rc2; and Asterisk Business Edition C.2.3, with the pedantic option enabled, allows remote authenticated users to cause a denial of service (crash) via a SIP INVITE request without any headers, which triggers a NULL pointer dereference in the (1) sip_uri_headers_cmp and (2) sip_uri_params_cmp functions.. EPSS estimates a 2.57% chance of exploitation in the next 30 days.

Description

The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6; 1.6.1 before 1.6.1.0-rc2; and Asterisk Business Edition C.2.3, with the pedantic option enabled, allows remote authenticated users to cause a denial of service (crash) via a SIP INVITE request without any headers, which triggers a NULL pointer dereference in the (1) sip_uri_headers_cmp and (2) sip_uri_params_cmp functions.

Metrics

EPSS Probability
2.57%

83.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
DigiumAsterisk1.4.22—
DigiumAsterisk1.4.23—
DigiumAsterisk1.4.23.1—
DigiumAsterisk1.6.0—
DigiumAsterisk1.6.0.1—
DigiumAsterisk1.6.0.2—
DigiumAsterisk1.6.0.3—
DigiumAsterisk1.6.0.4Rc1
DigiumAsterisk1.6.0.5—
DigiumAsterisk1.6.1—
DigiumAsteriskc.2.3—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2009-0871?
The SIP channel driver in Asterisk Open Source 1.4.22, 1.4.23, and 1.4.23.1; 1.6.0 before 1.6.0.6; 1.6.1 before 1.6.1.0-rc2; and Asterisk Business Edition C.2.3, with the pedantic option enabled, allows remote authenticated users to cause a denial of service (crash) via a SIP INVITE request without any headers, which triggers a NULL pointer dereference in the (1) sip_uri_headers_cmp and (2) sip_uri_params_cmp functions.
How severe is CVE-2009-0871?
Severity scoring for CVE-2009-0871 is pending analysis. The EPSS model estimates a 2.57% probability of exploitation in the next 30 days.
How do I fix CVE-2009-0871?
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.

Are you affected by CVE-2009-0871?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST