Debian DSA-4633-1 : curl - security update

critical Nessus Plugin ID 133968
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

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

- CVE-2019-5436 A heap buffer overflow in the TFTP receiving code was discovered, which could allow DoS or arbitrary code execution. This only affects the oldstable distribution (stretch).

- CVE-2019-5481 Thomas Vegas discovered a double-free in the FTP-KRB code, triggered by a malicious server sending a very large data block.

- CVE-2019-5482 Thomas Vegas discovered a heap buffer overflow that could be triggered when a small non-default TFTP blocksize is used.

Solution

Upgrade the curl packages.

For the oldstable distribution (stretch), these problems have been fixed in version 7.52.1-5+deb9u10.

For the stable distribution (buster), these problems have been fixed in version 7.64.0-4+deb10u1.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=929351

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=940009

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=940010

https://security-tracker.debian.org/tracker/CVE-2019-5436

https://security-tracker.debian.org/tracker/CVE-2019-5481

https://security-tracker.debian.org/tracker/CVE-2019-5482

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

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

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

https://www.debian.org/security/2020/dsa-4633

Plugin Details

Severity: Critical

ID: 133968

File Name: debian_DSA-4633.nasl

Version: 1.2

Type: local

Agent: unix

Published: 2/25/2020

Updated: 2/27/2020

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

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:10.0, 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: 2/22/2020

Vulnerability Publication Date: 5/28/2019

Reference Information

CVE: CVE-2019-5436, CVE-2019-5481, CVE-2019-5482

DSA: 4633