Vulnerability CVE-2019-9192

Vulnerability Name:

CVE-2019-9192

Assigned:

2019-02-26

Published:

2019-02-26

Updated:

2020-08-24

Summary:

** DISPUTED ** In the GNU C Library (aka glibc or libc6) through 2.29, check_dst_limits_calc_pos_1 in posix/regexec.c has Uncontrolled Recursion, as demonstrated by '(|)(\\1\\1)*' in grep, a different issue than CVE-2018-20796.
Note: the software maintainer disputes that this is a vulnerability because the behavior occurs only with a crafted pattern.

CVSS v3 Severity:

7.5 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): High

5.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Low

CVSS v2 Severity:

5.0 Medium (CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Authentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

5.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Low Athentication (Au): None
Impact Metrics:	Confidentiality (C): None Integrity (I): None Availibility (A): Partial

Vulnerability Type:

CWE-674

References:

Source: MITRE
Type: CNA
CVE-2019-9192

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://sourceware.org/bugzilla/show_bug.cgi?id=24269

Source: CONFIRM
Type: UNKNOWN
https://support.f5.com/csp/article/K26346590?utm_source=f5support&utm_medium=RSS

Vulnerable Configuration:

Configuration 1:

cpe:/a:gnu:glibc:*:*:*:*:*:*:*:* (Version <= 2.29)

Denotes that component is vulnerable

Oval Definitions

Definition ID	Class	Title	Last Modified
oval:com.ubuntu.disco:def:201991920000000	V	CVE-2019-9192 on Ubuntu 19.04 (disco) - negligible.	2019-02-26
oval:com.ubuntu.bionic:def:20199192000	V	CVE-2019-9192 on Ubuntu 18.04 LTS (bionic) - low.	2019-02-26
oval:com.ubuntu.cosmic:def:201991920000000	V	CVE-2019-9192 on Ubuntu 18.10 (cosmic) - negligible.	2019-02-26
oval:com.ubuntu.cosmic:def:20199192000	V	CVE-2019-9192 on Ubuntu 18.10 (cosmic) - low.	2019-02-26
oval:com.ubuntu.bionic:def:201991920000000	V	CVE-2019-9192 on Ubuntu 18.04 LTS (bionic) - negligible.	2019-02-26
oval:com.ubuntu.trusty:def:20199192000	V	CVE-2019-9192 on Ubuntu 14.04 LTS (trusty) - low.	2019-02-26
oval:com.ubuntu.xenial:def:201991920000000	V	CVE-2019-9192 on Ubuntu 16.04 LTS (xenial) - negligible.	2019-02-26
oval:com.ubuntu.xenial:def:20199192000	V	CVE-2019-9192 on Ubuntu 16.04 LTS (xenial) - low.	2019-02-26

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