Strix
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CVE-2008-1897

UnknownEPSS 2.74%

Last modified

CVE-2008-1897 is a vulnerability of currently unknown severity. The IAX2 channel driver (chan_iax2) in Asterisk Open Source 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1; Business Edition A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server's reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed ACK response that does not complete a 3-way handshake. NOTE: this issue exists because of an incomplete fix for CVE-2008-1923.. EPSS estimates a 2.74% chance of exploitation in the next 30 days.

Description

The IAX2 channel driver (chan_iax2) in Asterisk Open Source 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1; Business Edition A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server's reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed ACK response that does not complete a 3-way handshake. NOTE: this issue exists because of an incomplete fix for CVE-2008-1923.

Metrics

EPSS Probability
2.74%

84.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
AsteriskAsterisk Appliance Developer Kit0.2—
AsteriskAsterisk Appliance Developer Kit0.3—
AsteriskAsterisk Appliance Developer Kit0.4—
AsteriskAsterisk Appliance Developer Kit0.5—
AsteriskAsterisk Appliance Developer Kit0.6—
AsteriskAsterisk Appliance Developer Kit0.6.0—
AsteriskAsterisk Appliance Developer Kit0.7—
AsteriskAsterisk Appliance Developer Kit0.8—
AsteriskAsterisk Business Edition<= b.2.5.1—
AsteriskAsterisk Business Edition<= c1.8.0—
AsteriskAsterisk Business Editiona—
AsteriskAsterisk Business Editionb.1.3.2—
AsteriskAsterisk Business Editionb.1.3.3—
AsteriskAsterisk Business Editionb.2.2.0—
AsteriskAsterisk Business Editionb.2.2.1—
AsteriskAsterisk Business Editionb.2.3.1—
AsteriskAsterisk Business Editionb.2.3.2—
AsteriskAsterisk Business Editionb.2.3.3—
AsteriskAsterisk Business Editionb.2.3.4—
AsteriskAsterisk Business Editionb.2.3.6—
AsteriskAsterisk Business Editionb.2.5.0—
AsteriskAsterisk Business Editionc.1.0Beta7
AsteriskAsterisk Business Editionc.1.6—
AsteriskAsterisk Business Editionc.1.6.1—
AsteriskAsterisk Business Editionc.1.6.2—
AsteriskAsterisknow<= 1.0.2—
AsteriskAsterisknow1.0—
AsteriskAsterisknow1.0.1—
AsteriskOpen Source<= 1.2.27—
AsteriskOpen Source<= 1.4.19—
AsteriskOpen Source1.0—
AsteriskOpen Source1.0.0—
AsteriskOpen Source1.0.1—
AsteriskOpen Source1.0.2—
AsteriskOpen Source1.0.3—
AsteriskOpen Source1.0.3.4—
AsteriskOpen Source1.0.4—
AsteriskOpen Source1.0.5—
AsteriskOpen Source1.0.6—
AsteriskOpen Source1.0.7—
AsteriskOpen Source1.0.8—
AsteriskOpen Source1.0.9—
AsteriskOpen Source1.0.11—
AsteriskOpen Source1.0.11.1—
AsteriskOpen Source1.0.12—
AsteriskOpen Source1.2.0—
AsteriskOpen Source1.2.1—
AsteriskOpen Source1.2.2—
AsteriskOpen Source1.2.3—
AsteriskOpen Source1.2.4—

Showing 50 of 102 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2008-1897?
The IAX2 channel driver (chan_iax2) in Asterisk Open Source 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1; Business Edition A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server's reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed ACK response that does not complete a 3-way handshake. NOTE: this issue exists because of an incomplete fix for CVE-2008-1923.
How severe is CVE-2008-1897?
Severity scoring for CVE-2008-1897 is pending analysis. The EPSS model estimates a 2.74% probability of exploitation in the next 30 days.
How do I fix CVE-2008-1897?
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-2008-1897?

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

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Source: NVD / NIST