CVE-2017-7502

nss: Null pointer dereference when handling empty SSLv2 messages

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Null pointer dereference vulnerability in NSS since 3.24.0 was found when server receives empty SSLv2 messages resulting into denial of service by remote attacker.

Se ha encontrado una vulnerabilidad de desreferencia de puntero NULL en NSS desde la versión 3.24.0 en la que el servidor recibe mensajes SSLv2 vacíos, lo que da lugar a una denegación de servicio (DoS) por parte de atacantes remotos.

A null pointer dereference flaw was found in the way NSS handled empty SSLv2 messages. An attacker could use this flaw to crash a server application compiled against the NSS library.

*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

2017-04-05 CVE Reserved
2017-05-30 CVE Published
2024-08-05 CVE Updated
2024-08-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (11)

URL	Tag	Source
http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html	X_refsource_confirm
http://www.securityfocus.com/bid/98744	Third Party Advisory
http://www.securitytracker.com/id/1038579	Vdb Entry

URL	Date	SRC

URL	Date	SRC
https://hg.mozilla.org/projects/nss/rev/55ea60effd0d	2023-02-12

URL	Date	SRC
http://www.debian.org/security/2017/dsa-3872	2023-02-12
https://access.redhat.com/errata/RHSA-2017:1364	2023-02-12
https://access.redhat.com/errata/RHSA-2017:1365	2023-02-12
https://access.redhat.com/errata/RHSA-2017:1567	2023-02-12
https://access.redhat.com/errata/RHSA-2017:1712	2023-02-12
https://access.redhat.com/security/cve/CVE-2017-7502	2017-06-21
https://bugzilla.redhat.com/show_bug.cgi?id=1446631	2017-06-21

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.24.0 Search vendor "Mozilla" for product "Network Security Services" and version "3.24.0"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.25.0 Search vendor "Mozilla" for product "Network Security Services" and version "3.25.0"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.25.1 Search vendor "Mozilla" for product "Network Security Services" and version "3.25.1"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.26.0 Search vendor "Mozilla" for product "Network Security Services" and version "3.26.0"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.26.2 Search vendor "Mozilla" for product "Network Security Services" and version "3.26.2"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.27.0 Search vendor "Mozilla" for product "Network Security Services" and version "3.27.0"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.27.1 Search vendor "Mozilla" for product "Network Security Services" and version "3.27.1"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.27.2 Search vendor "Mozilla" for product "Network Security Services" and version "3.27.2"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.28.0 Search vendor "Mozilla" for product "Network Security Services" and version "3.28.0"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.28.1 Search vendor "Mozilla" for product "Network Security Services" and version "3.28.1"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.28.2 Search vendor "Mozilla" for product "Network Security Services" and version "3.28.2"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.28.3 Search vendor "Mozilla" for product "Network Security Services" and version "3.28.3"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.29.0 Search vendor "Mozilla" for product "Network Security Services" and version "3.29.0"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.29.1 Search vendor "Mozilla" for product "Network Security Services" and version "3.29.1"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.29.2 Search vendor "Mozilla" for product "Network Security Services" and version "3.29.2"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.29.3 Search vendor "Mozilla" for product "Network Security Services" and version "3.29.3"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.30.0 Search vendor "Mozilla" for product "Network Security Services" and version "3.30.0"		-		Affected
Mozilla Search vendor "Mozilla"		Network Security Services Search vendor "Mozilla" for product "Network Security Services"				3.30.1 Search vendor "Mozilla" for product "Network Security Services" and version "3.30.1"		-		Affected