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CVE-2015-7575

UnknownEPSS 2.88%

Last modified

CVE-2015-7575 is a vulnerability of currently unknown severity. Mozilla Network Security Services (NSS) before 3.20.2, as used in Mozilla Firefox before 43.0.2 and Firefox ESR 38.x before 38.5.2, does not reject MD5 signatures in Server Key Exchange messages in TLS 1.2 Handshake Protocol traffic, which makes it easier for man-in-the-middle attackers to spoof servers by triggering a collision.. EPSS estimates a 2.88% chance of exploitation in the next 30 days.

Description

Mozilla Network Security Services (NSS) before 3.20.2, as used in Mozilla Firefox before 43.0.2 and Firefox ESR 38.x before 38.5.2, does not reject MD5 signatures in Server Key Exchange messages in TLS 1.2 Handshake Protocol traffic, which makes it easier for man-in-the-middle attackers to spoof servers by triggering a collision.

Metrics

EPSS Probability
2.88%

85.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
MozillaNetwork Security Services<= 3.20.1
OpensuseLeap42.1
OpensuseOpensuse13.1
OpensuseOpensuse13.2
MozillaFirefox38.0
MozillaFirefox38.0.1
MozillaFirefox38.0.5
MozillaFirefox38.1.0
MozillaFirefox38.1.1
MozillaFirefox38.2.0
MozillaFirefox38.2.1
MozillaFirefox38.3.0
MozillaFirefox38.4.0
MozillaFirefox38.5.0
MozillaFirefox38.5.1
CanonicalUbuntu Linux14.04
CanonicalUbuntu Linux15.04
CanonicalUbuntu Linux15.10
MozillaFirefox<= 43.0.1

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2015-7575?
Mozilla Network Security Services (NSS) before 3.20.2, as used in Mozilla Firefox before 43.0.2 and Firefox ESR 38.x before 38.5.2, does not reject MD5 signatures in Server Key Exchange messages in TLS 1.2 Handshake Protocol traffic, which makes it easier for man-in-the-middle attackers to spoof servers by triggering a collision.
How severe is CVE-2015-7575?
Severity scoring for CVE-2015-7575 is pending analysis. The EPSS model estimates a 2.88% probability of exploitation in the next 30 days.
How do I fix CVE-2015-7575?
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-2015-7575?

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

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Source: NVD / NIST