Debian DSA-4331-1 : curl - security update

critical Nessus Plugin ID 118720
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

Two vulnerabilities were discovered in cURL, an URL transfer library.

- CVE-2018-16839 Harry Sintonen discovered that, on systems with a 32 bit size_t, an integer overflow would be triggered when a SASL user name longer than 2GB is used. This would in turn cause a very small buffer to be allocated instead of the intended very huge one, which would trigger a heap buffer overflow when the buffer is used.

- CVE-2018-16842 Brian Carpenter discovered that the logic in the curl tool to wrap error messages at 80 columns is flawed, leading to a read buffer overflow if a single word in the message is itself longer than 80 bytes.

Solution

Upgrade the curl packages.

For the stable distribution (stretch), these problems have been fixed in version 7.52.1-5+deb9u8.

See Also

https://security-tracker.debian.org/tracker/CVE-2018-16839

https://security-tracker.debian.org/tracker/CVE-2018-16842

https://security-tracker.debian.org/tracker/source-package/curl

https://packages.debian.org/source/stretch/curl

https://www.debian.org/security/2018/dsa-4331

Plugin Details

Severity: Critical

ID: 118720

File Name: debian_DSA-4331.nasl

Version: 1.5

Type: local

Agent: unix

Published: 11/5/2018

Updated: 4/29/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

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

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:curl, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 11/2/2018

Vulnerability Publication Date: 10/31/2018

Reference Information

CVE: CVE-2018-16839, CVE-2018-16842

DSA: 4331