PRNG Seed Error Affecting nss package, versions <3.39-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
1.48% (73rd percentile)

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  • Snyk IDSNYK-ALPINE320-NSS-7010526
  • published23 May 2024
  • disclosed29 Apr 2019

Introduced: 29 Apr 2019

CVE-2018-12384  (opens in a new tab)
CWE-335  (opens in a new tab)

How to fix?

Upgrade Alpine:3.20 nss to version 3.39-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nss package and not the nss package as distributed by Alpine. See How to fix? for Alpine:3.20 relevant fixed versions and status.

When handling a SSLv2-compatible ClientHello request, the server doesn't generate a new random value but sends an all-zero value instead. This results in full malleability of the ClientHello for SSLv2 used for TLS 1.2 in all versions prior to NSS 3.39. This does not impact TLS 1.3.