OpenSUSE Linux update for memcached

Published: 2020-05-26

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2019-11596 CVE-2019-15026
CWE-ID	CWE-476 CWE-125
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	Opensuse Operating systems & Components / Operating system
Vendor	SUSE

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU18374

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-11596

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dreference error in the "lru mode" and "lru temp_ttl" commands when parsing specially crafted lru command messages passed passed to process_lru_command() function in memcached.c. A remote attacker can send a specially crafted HTTP request to the affected application and perform denial of service (DoS) attack.

Exploitation example:

echo -n "bHJ1IG1vZGUKb7G0AGxydWRl6gdtTk9UXw==" | base64 -d | nc 127.0.0.1 11211

Mitigation

Update the affected packages.

Vulnerable software versions

Opensuse: 15.1

External links

http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00060.html

Q & A

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. However, proof of concept for this vulnerability is available.

2) Out-of-bounds read

EUVDB-ID: #VU20847