FreeBSD : OpenSSL -- Multiple vulnerabilities (96a21236-707b-11eb-96d8-d4c9ef517024)

low Nessus Plugin ID 146560
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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The OpenSSL project reports :

NULL pointer deref in X509_issuer_and_serial_hash() CVE-2021-23841(Moderate) The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack.

Integer overflow in CipherUpdate CVE-2021-23840(Low) Calls to EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate may overflow the output length argument in some cases where the input length is close to the maximum permissable length for an integer on the platform. In such cases the return value from the function call will be 1 (indicating success), but the output length value will be negative. This could cause applications to behave incorrectly or crash.

Solution

Update the affected packages.

See Also

https://www.openssl.org/news/secadv/20210216.txt

http://www.nessus.org/u?9ef84a3f

Plugin Details

Severity: Low

ID: 146560

File Name: freebsd_pkg_96a21236707b11eb96d8d4c9ef517024.nasl

Version: 1.5

Type: local

Published: 2/17/2021

Updated: 3/12/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2021-23839

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Low

Base Score: 3.7

Temporal Score: 3.2

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

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:openssl, p-cpe:/a:freebsd:freebsd:openssl-devel, 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: 2/16/2021

Vulnerability Publication Date: 2/16/2021

Reference Information

CVE: CVE-2021-23839, CVE-2021-23840, CVE-2021-23841