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CVE-2018-19278

UnknownEPSS 3.58%

Last modified

CVE-2018-19278 is a vulnerability of currently unknown severity. Buffer overflow in DNS SRV and NAPTR lookups in Digium Asterisk 15.x before 15.6.2 and 16.x before 16.0.1 allows remote attackers to crash Asterisk via a specially crafted DNS SRV or NAPTR response, because a buffer size is supposed to match an expanded length but actually matches a compressed length.. EPSS estimates a 3.58% chance of exploitation in the next 30 days.

Description

Buffer overflow in DNS SRV and NAPTR lookups in Digium Asterisk 15.x before 15.6.2 and 16.x before 16.0.1 allows remote attackers to crash Asterisk via a specially crafted DNS SRV or NAPTR response, because a buffer size is supposed to match an expanded length but actually matches a compressed length.

Metrics

EPSS Probability
3.58%

87.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
DigiumAsterisk15.0.0—
DigiumAsterisk15.1.0—
DigiumAsterisk15.1.2—
DigiumAsterisk15.1.3—
DigiumAsterisk15.1.4—
DigiumAsterisk15.1.5—
DigiumAsterisk15.2.0Rc1
DigiumAsterisk15.2.1—
DigiumAsterisk15.2.2—
DigiumAsterisk15.3.0—
DigiumAsterisk15.4.0—
DigiumAsterisk15.4.1—
DigiumAsterisk15.5.0—
DigiumAsterisk15.6.0—
DigiumAsterisk15.6.1—
DigiumAsterisk16.0.0—
DigiumAsterisk16.0.1Rc1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-19278?
Buffer overflow in DNS SRV and NAPTR lookups in Digium Asterisk 15.x before 15.6.2 and 16.x before 16.0.1 allows remote attackers to crash Asterisk via a specially crafted DNS SRV or NAPTR response, because a buffer size is supposed to match an expanded length but actually matches a compressed length.
How severe is CVE-2018-19278?
Severity scoring for CVE-2018-19278 is pending analysis. The EPSS model estimates a 3.58% probability of exploitation in the next 30 days.
How do I fix CVE-2018-19278?
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-2018-19278?

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

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Source: NVD / NIST