GLSA-201408-14 : stunnel: Information disclosure

This script is Copyright (C) 2014-2016 Tenable Network Security, Inc.


Synopsis :

The remote Gentoo host is missing one or more security-related
patches.

Description :

The remote host is affected by the vulnerability described in GLSA-201408-14
(stunnel: Information disclosure)

stunnel does not properly update the state of the pseudo-random
generator after fork-threading which causes subsequent children with the
same process ID to use the same entropy pool. ECDSA and DSA keys, when
not used in deterministic mode (RFC6979), rely on random data for its k
parameter to not leak private key information.

Impact :

A remote attacker may gain access to private key information from ECDSA
or DSA keys.

Workaround :

There is no known workaround at this time.

See also :

https://security.gentoo.org/glsa/201408-14

Solution :

All stunnel users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-misc/stunnel-5.02'

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:N/AC:M/Au:N/C:P/I:N/A:N)
CVSS Temporal Score : 3.7
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : true

Family: Gentoo Local Security Checks

Nessus Plugin ID: 77458 ()

Bugtraq ID: 65964

CVE ID: CVE-2014-0016

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