CVE-2019-12522

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Source
https://cve.org/CVERecord?id=CVE-2019-12522
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-12522.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2019-12522
Downstream
Published
2020-04-15T19:15:12Z
Modified
2026-07-08T16:07:43Z
Severity
  • 4.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Git / github.com/squid-cache/squid

Affected ranges

Type
GIT
Repo
https://github.com/squid-cache/squid
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
2e17b02616d37206ba9cccc53c20667624fbef9f
Database specific
Show details 
{
    "cpe": "cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "4.7"
        }
    ],
    "source": "CPE_RANGE"
}

Affected versions

Other
HISTORIC_RELEASES
SQUID_3_0_PRE1
SQUID_3_0_PRE2
SQUID_3_0_PRE3
SQUID_3_0_PRE4
SQUID_3_0_PRE5
SQUID_3_0_PRE6
SQUID_3_0_PRE7
SQUID_3_0_RC1
SQUID_4_0_1
SQUID_4_0_10
SQUID_4_0_11
SQUID_4_0_12
SQUID_4_0_13
SQUID_4_0_14
SQUID_4_0_15
SQUID_4_0_16
SQUID_4_0_17
SQUID_4_0_18
SQUID_4_0_19
SQUID_4_0_2
SQUID_4_0_20
SQUID_4_0_21
SQUID_4_0_22
SQUID_4_0_23
SQUID_4_0_24
SQUID_4_0_25
SQUID_4_0_3
SQUID_4_0_4
SQUID_4_0_5
SQUID_4_0_6
SQUID_4_0_7
SQUID_4_0_8
SQUID_4_0_9
SQUID_4_1
SQUID_4_2
SQUID_4_3
SQUID_4_4
SQUID_4_5
SQUID_4_6
SQUID_4_7
take00

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-12522.json"