CVE-2017-5462

moderate-risk

Published 2018-06-11

A flaw in DRBG number generation within the Network Security Services (NSS) library where the internal state V does not correctly carry bits over. The NSS library has been updated to fix this issue to address this issue and Firefox ESR 52.1 has been updated with NSS version 3.28.4. This vulnerability affects Thunderbird < 52.1, Firefox ESR < 45.9, Firefox ESR < 52.1, and Firefox < 53.

Do I need to act?

1.1% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 5.3/10 Medium

NETWORK / LOW complexity

Affected Products (5)

Debian Linux

Firefox

Network Security Services

Thunderbird

Affected Vendors

Debian Mozilla

References (20)

Third Party Advisory http://www.securityfocus.com/bid/97940

Third Party Advisory http://www.securitytracker.com/id/1038320

Issue Tracking https://bugzilla.mozilla.org/show_bug.cgi?id=1345089

Third Party Advisory https://security.gentoo.org/glsa/201705-04

Third Party Advisory https://www.debian.org/security/2017/dsa-3831

Third Party Advisory https://www.debian.org/security/2017/dsa-3872

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-10/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-11/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-12/

Vendor Advisory https://www.mozilla.org/security/advisories/mfsa2017-13/