Vulnerability identifier: #VU32582
Vulnerability risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-125
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
lighttpd
Server applications /
Web servers
Vendor: lighttpd
Description
The vulnerability allows a remote attacker to perform denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when processing a long string in the last key value in the variable list, which triggers a heap-based buffer over-read within the Off-by-one error in the process_cgivars function in contrib/daemonchk.c. A remote attacker can create a specially crafted file, pass it to the application, trigger out-of-bounds read error and crash the affected application.
Mitigation
Install update from vendor's website.
Vulnerable software versions
lighttpd: 1.4.40
External links
http://secunia.com/advisories/55976
http://sourceforge.net/p/nagios/nagioscore/ci/d97e03f32741a7d851826b03ed73ff4c9612a866/
http://www.mandriva.com/security/advisories?name=MDVSA-2014:004
http://www.openwall.com/lists/oss-security/2013/12/24/1
http://www.securityfocus.com/bid/64489
http://lists.debian.org/debian-lts-announce/2018/12/msg00014.html
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.