7.5
HIGH
CVE-2017-7502
Mozilla NSS Denial of Service Input Validation Bypass
Description

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.

INFO

Published Date :

May 30, 2017, 6:29 p.m.

Last Modified :

Nov. 21, 2024, 3:32 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2017-7502 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Mozilla network_security_services

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2017-7502 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2017-7502 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference http://www.debian.org/security/2017/dsa-3872
    Added Reference http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
    Added Reference http://www.securityfocus.com/bid/98744
    Added Reference http://www.securitytracker.com/id/1038579
    Added Reference https://access.redhat.com/errata/RHSA-2017:1364
    Added Reference https://access.redhat.com/errata/RHSA-2017:1365
    Added Reference https://access.redhat.com/errata/RHSA-2017:1567
    Added Reference https://access.redhat.com/errata/RHSA-2017:1712
    Added Reference https://hg.mozilla.org/projects/nss/rev/55ea60effd0d
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Feb. 12, 2023

    Action Type Old Value New Value
    Changed Description 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. 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.
    Removed CVSS V3 Red Hat, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Removed Reference https://access.redhat.com/security/cve/CVE-2017-7502 [No Types Assigned]
    Removed Reference https://bugzilla.redhat.com/show_bug.cgi?id=1446631 [No Types Assigned]
    Added CWE Red Hat, Inc. CWE-476
  • CVE Modified by [email protected]

    Feb. 02, 2023

    Action Type Old Value New Value
    Changed Description 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. 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.
    Added CVSS V3 Red Hat, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1446631 [No Types Assigned]
    Added Reference https://access.redhat.com/security/cve/CVE-2017-7502 [No Types Assigned]
    Removed CWE Red Hat, Inc. CWE-476
  • CVE Modified by [email protected]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CWE Red Hat, Inc. CWE-476
  • CVE Modified by [email protected]

    Jan. 05, 2018

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2017:1712 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2017:1567 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2017:1365 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2017:1364 [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 04, 2017

    Action Type Old Value New Value
    Added Reference http://www.debian.org/security/2017/dsa-3872 [No Types Assigned]
  • CVE Modified by [email protected]

    Oct. 20, 2017

    Action Type Old Value New Value
    Added Reference http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 08, 2017

    Action Type Old Value New Value
    Added Reference http://www.securitytracker.com/id/1038579 [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 09, 2017

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type http://www.securityfocus.com/bid/98744 No Types Assigned http://www.securityfocus.com/bid/98744 Third Party Advisory, VDB Entry
    Changed Reference Type https://hg.mozilla.org/projects/nss/rev/55ea60effd0d No Types Assigned https://hg.mozilla.org/projects/nss/rev/55ea60effd0d Patch
    Added CWE CWE-476
    Added CPE Configuration OR *cpe:2.3:a:mozilla:network_security_services:3.24.0:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.25.0:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.25.1:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.26.0:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.26.2:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.27.0:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.27.1:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.27.2:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.28.0:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.28.1:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.28.2:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.28.3:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.29.0:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.29.1:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.29.2:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.29.3:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.30.0:*:*:*:*:*:*:* *cpe:2.3:a:mozilla:network_security_services:3.30.1:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jun. 02, 2017

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/98744 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2017-7502 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2017-7502 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

2.57 }} -1.94%

score

0.89929

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability