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FreeBSD : OpenSSL -- Overflow vulnerability (d778ddb0-2338-11ea-a1c7-b499baebfeaf)

medium Nessus Plugin ID 132351

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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

The OpenSSL project reports :

rsaz_512_sqr overflow bug on x86_64 (CVE-2019-1551) (Low) There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected.
Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME.

Solution

Update the affected package.

See Also

https://www.openssl.org/news/secadv/20191206.txt

http://www.nessus.org/u?6df23337

Plugin Details

Severity: Medium

ID: 132351

File Name: freebsd_pkg_d778ddb0233811eaa1c7b499baebfeaf.nasl

Version: 1.5

Type: local

Published: 12/23/2019

Updated: 4/2/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2019-1551

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:openssl, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 12/20/2019

Vulnerability Publication Date: 12/6/2019

Reference Information

CVE: CVE-2019-1551

IAVA: 2019-A-0303-S