CVE-2016-10195

libevent: Stack-buffer overflow in the name_parse() function

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The name_parse function in evdns.c in libevent before 2.1.6-beta allows remote attackers to have unspecified impact via vectors involving the label_len variable, which triggers an out-of-bounds stack read.

La función name_parse en evdns.c en libevent en versiones anteriores a 2.1.6-beta permite a atacantes remotos tener un impacto no especificado a través de vectores que implican la variable label_len, lo que desencadena una lectura de pila fuera de los límites.

A vulnerability was found in libevent with the parsing of DNS requests and replies. An attacker could send a forged DNS response to an application using libevent which could lead to reading data out of bounds on the heap, potentially disclosing a small amount of application memory.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-02-01 CVE Reserved
2017-03-13 CVE Published
2023-06-19 EPSS Updated
2024-08-06 CVE Updated
2024-08-06 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-125: Out-of-bounds Read

CAPEC

References (14)

URL	Tag	Source
http://www.securityfocus.com/bid/96014	Third Party Advisory
http://www.securitytracker.com/id/1038320	Broken Link
https://github.com/libevent/libevent/blob/release-2.1.6-beta/ChangeLog	Release Notes

URL	Date	SRC
https://github.com/libevent/libevent/issues/317	2024-08-06

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2017/01/31/17	2022-01-31
http://www.openwall.com/lists/oss-security/2017/02/02/7	2022-01-31
https://github.com/libevent/libevent/commit/96f64a022014a208105ead6c8a7066018449d86d	2022-01-31

URL	Date	SRC
http://www.debian.org/security/2017/dsa-3789	2022-01-31
https://access.redhat.com/errata/RHSA-2017:1104	2022-01-31
https://access.redhat.com/errata/RHSA-2017:1106	2022-01-31
https://access.redhat.com/errata/RHSA-2017:1201	2022-01-31
https://security.gentoo.org/glsa/201705-01	2022-01-31
https://access.redhat.com/security/cve/CVE-2016-10195	2017-05-08
https://bugzilla.redhat.com/show_bug.cgi?id=1418608	2017-05-08

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Libevent Project Search vendor "Libevent Project"		Libevent Search vendor "Libevent Project" for product "Libevent"				<= 2.1.5 Search vendor "Libevent Project" for product "Libevent" and version " <= 2.1.5"		-		Affected
Debian Search vendor "Debian"		Debian Linux Search vendor "Debian" for product "Debian Linux"				8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0"		-		Affected