Vulnerability Report

CVE-2019-12522

Title: Squid-Cache Squid Auth Bypass

Auth Bypass

Proof Of Concept

No public PoC currently indexed for CVE-2019-12522.

CWE Category CWE-269
Published Date Apr 15, 2020
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 4.5 CVSS v3.1
Exploit Probability (EPSS)
0.34%

Vulnerability Summary

CVE-2019-12522: An issue was discovered in Squid through 4.7. When Squid is run as root, it spawns its child processes as a lesser user, by default the user nobody. This is done via the leave_suid call. leave_suid leaves the Saved UID as 0. This makes it trivial for an attacker who has compromised the child process to escalate their privileges back to root.

Impacted Vendors

S
squid-cache 1
S
squid 1

Reference Links

https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12522.txt https://security.netapp.com/advisory/ntap-20210205-0006/ https://gitlab.com/jeriko.one/security/-/blob/master/squid/CVEs/CVE-2019-12522.txt https://security.netapp.com/advisory/ntap-20210205-0006/
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
4.5
Attack Vector
LOCAL
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
CVSS v2.0
Source Entity [email protected]
Severity MEDIUM
4.4
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:L/AC:M/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2019-12522 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector LOCAL
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

Affected Stack

No specific products linked.