Vulnerability Details : CVE-2019-19191
Shibboleth Service Provider (SP) 3.x before 3.1.0 shipped a spec file that calls chown on files in a directory controlled by the service user (the shibd account) after installation. This allows the user to escalate to root by pointing symlinks to files such as /etc/shadow.
Products affected by CVE-2019-19191
- cpe:2.3:a:shibboleth:service_provider:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-19191
0.10%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 40 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-19191
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2019-19191
-
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-19191
-
https://issues.shibboleth.net/jira/browse/SSPCPP-874
[SSPCPP-874] Specfile has unnecessary "fix-up" logic that should be removed - Shibboleth JIRAIssue Tracking;Vendor Advisory
-
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00017.html
[security-announce] openSUSE-SU-2020:0020-1: moderate: Security update f
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https://bugzilla.suse.com/show_bug.cgi?id=1157471
Bug 1157471 – VUL-0: shibboleth-sp: Local privilege escalation from shibd to root in upstream spec fileExploit;Issue Tracking;Third Party Advisory
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