CVE-2019-11596

memcached: null-pointer dereference in "lru mode" and "lru temp_ttl" causing denial of service

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In memcached before 1.5.14, a NULL pointer dereference was found in the "lru mode" and "lru temp_ttl" commands. This causes a denial of service when parsing crafted lru command messages in process_lru_command in memcached.c.

memcached versiones anteriores a la 1.5.14, se encontró una desreferencia a un puntero NULL en los comandos "lru mode" y "lru temp_ttl". Esto causa una denegación de servicio cuando se analizan mensajes de comandos lru en process_lru_command en memcached.c.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-04-29 CVE Reserved
2019-04-29 CVE Published
2024-08-04 CVE Updated
2024-08-04 First Exploit
2024-09-19 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (9)

URL	Tag	Source

URL	Date	SRC
https://github.com/memcached/memcached/issues/474	2024-08-04

URL	Date	SRC
https://github.com/memcached/memcached/commit/d35334f368817a77a6bd1f33c6a5676b2c402c02	2023-11-07
https://github.com/memcached/memcached/compare/ee1cfe3...50bdc9f	2023-11-07

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00060.html	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UUE3QBMP5UWTXMPKJREUICH6DIK6SOBX	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y2CCWRM4LHB253KG5SPOKRVDCXQX5VZR	2023-11-07
https://usn.ubuntu.com/3963-1	2023-11-07
https://access.redhat.com/security/cve/CVE-2019-11596	2020-12-16
https://bugzilla.redhat.com/show_bug.cgi?id=1706001	2020-12-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Memcached Search vendor "Memcached"		Memcached Search vendor "Memcached" for product "Memcached"				< 1.5.14 Search vendor "Memcached" for product "Memcached" and version " < 1.5.14"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.04"		lts		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				18.10 Search vendor "Canonical" for product "Ubuntu Linux" and version "18.10"		-		Affected
Canonical Search vendor "Canonical"		Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux"				19.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "19.04"		-		Affected