Out-of-bounds read in monit (Alpine package)

1) Out-of-bounds read

EUVDB-ID: #VU18413

Risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-11455

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when processing parameters passed via HTTP GET or POST requests within the Util_urlDecode() function in util.c. A remote authenticated attacker can send a specially crafted HTTP request to the affected application, trigger out-of-bounds read error and read contents of memory.

Mitigation

Install update from vendor's website.

Vulnerable software versions

monit (Alpine package): 5.24.0-r1 - 5.25.1-r1

CPE2.3

• cpe:2.3:a:alpine:monit_alpine_package:5.24.0-r1:*:*:*:*:alpine_linux:*:3.6
• cpe:2.3:a:alpine:monit_alpine_package:5.24.0-r2:*:*:*:*:alpine_linux:*:3.6
• cpe:2.3:a:alpine:monit_alpine_package:5.25.1-r0:*:*:*:*:alpine_linux:*:3.7

External links

https://git.alpinelinux.org/aports/commit/?id=165df433b6fd3e30ce578c4f54946a2079aa963c
https://git.alpinelinux.org/aports/commit/?id=8ae19acb1269f568cc856f52a50234227872b0bd
https://git.alpinelinux.org/aports/commit/?id=b3c4cba85e047ff7101bb58a0acf2a266f0d3f34

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.