Debian DSA-2271-1 : curl - improper delegation of client credentials

medium Nessus Plugin ID 55491

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Synopsis

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

Description

Richard Silverman discovered that when doing GSSAPI authentication, libcurl unconditionally performs credential delegation. This hands the server a copy of the client's security credentials, allowing the server to impersonate the client to any other using the same GSSAPI mechanism. This is obviously a very sensitive operation, which should only be done when the user explicitly so directs.

Solution

Upgrade the curl packages.

For the oldstable distribution (lenny), this problem has been fixed in version 7.18.2-8lenny5.

For the stable distribution (squeeze), this problem has been fixed in version 7.21.0-2.

Plugin Details

Severity: Medium

ID: 55491

File Name: debian_DSA-2271.nasl

Version: 1.10

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 7/5/2011

Updated: 1/4/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.3

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

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:6.0, p-cpe:/a:debian:debian_linux:curl, cpe:/o:debian:debian_linux:5.0

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

Patch Publication Date: 7/2/2011

Reference Information

CVE: CVE-2011-2192

DSA: 2271

Detections

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