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CVE-2019-18932

Date: January 21, 2020

log.c in Squid Analysis Report Generator (sarg) through 2.3.11 allows local privilege escalation. By default, it uses a fixed temporary directory /tmp/sarg. As the root user, sarg creates this directory or reuses an existing one in an insecure manner. An attacker can pre-create the directory, and place symlinks in it (after winning a /tmp/sarg/denied.int_unsort race condition). The outcome will be corrupted or newly created files in privileged file system locations.

Severity Score

Related Resources (12)

https://people.canonical.com/~ubuntu-security/cve/CVE-2019-18932
https://bugzilla.suse.com/show_bug.cgi?id=1150554
https://sourceforge.net/projects/sarg/
https://security.gentoo.org/glsa/202007-32
https://nvd.nist.gov/vuln/detail/CVE-2019-18932
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00063.html
https://seclists.org/oss-sec/2020/q1/23
https://security-tracker.debian.org/tracker/CVE-2019-18932
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00051.html
http://www.openwall.com/lists/oss-security/2020/01/20/6
http://www.openwall.com/lists/oss-security/2020/01/27/1
https://www.mend.io/vulnerability-database/CVE-2019-18932

Severity Score

Weakness Type (CWE)

Link Following

CWE-59

Race Conditions

CWE-362

Improper Privilege Management

CWE-269

CVSS v3

Base Score:
Attack Vector (AV):
Attack Complexity (AC):
Privileges Required (PR):
User Interaction (UI):
Scope (S):
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL

CVSS v2

Base Score:
Access Vector (AV):
Access Complexity (AC):
Authentication (AU):
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH
Additional information:

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