Strix
26.1K

CVE-2017-13704

UnknownEPSS 65.41%

Last modified

CVE-2017-13704 is a vulnerability of currently unknown severity. In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.. EPSS estimates a 65.41% chance of exploitation in the next 30 days.

Description

In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.

Metrics

EPSS Probability
65.41%

99.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux17.04
DebianDebian Linux7.0
DebianDebian Linux7.1
DebianDebian Linux9.0
FedoraprojectFedora27
NovellLeap42.2
NovellLeap42.3
RedhatEnterprise Linux Desktop7.0
RedhatEnterprise Linux Server7.0
RedhatEnterprise Linux Workstation7.0
ThekelleysDnsmasq<= 2.77

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-13704?
In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.
How severe is CVE-2017-13704?
Severity scoring for CVE-2017-13704 is pending analysis. The EPSS model estimates a 65.41% probability of exploitation in the next 30 days.
How do I fix CVE-2017-13704?
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-2017-13704?

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

Scan your code now

Source: NVD / NIST