Path Traversal in Lighttpd
CVE-2018-19052
An issue was discovered in mod_alias_physical_handler in mod_alias.c in lighttpd before 1.4.50. There is potential ../ path traversal of a single directory above an alias target, with a specific mod_alias configuration where the matched alias lacks a trailing '/' character, but the alias target filesystem path does have a trailing '/' character.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.141 (96.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Lighttpd
- Debian Debian_linux — versions 9.0
- Opensuse Backports_sle — versions 15.0
- Opensuse Leap — versions 15.0, 15.1
- Suse Suse_linux_enterprise_server — versions 11, 12
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Exploit, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (vendor-advisory, Mailing List, Third Party Advisory, x_refsource_SUSE)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-19052?
- CVE-2018-19052 is a high-severity vulnerability in Lighttpd, classified under Path Traversal. CVSS score: 7.5/10. Published 2018-11-07.
- How severe is CVE-2018-19052?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2018-19052 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.