Network Security Services lib/dbm/src/hash.c __hash_open memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Network Security Services. It has been declared as critical. Affected by this issue is the function __hash_open of the file lib/dbm/src/hash.c. Executing a manipulation can lead to memory corruption. This vulnerability is registered as CVE-2017-11696. The attack needs to be launched locally. Furthermore, an exploit is available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability was found in Network Security Services (version now known). It has been declared as critical. This vulnerability affects the function __hash_open of the file lib/dbm/src/hash.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Heap-based buffer overflow in the __hash_open function in lib/dbm/src/hash.c in Mozilla Network Security Services (NSS) allows context-dependent attackers to have unspecified impact using a crafted cert8.db file.

The bug was discovered 08/09/2017. The weakness was published 08/09/2017 by Brian Carpenter as confirmed mailinglist post (Full-Disclosure). The advisory is available at seclists.org. This vulnerability was named CVE-2017-11696 since 07/27/2017. The exploitation appears to be easy. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at packetstormsecurity.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 232040 (Linux Distros Unpatched Vulnerability : CVE-2017-11696), which helps to determine the existence of the flaw in a target environment.

Applying the patch 13315:769f9ae07b10 is able to eliminate this problem.

The vulnerability is also documented in the databases at Tenable (232040), SecurityFocus (BID 100345†) and SecurityTracker (ID 1039153†). Similar entries are available at VDB-105369, VDB-105371 and VDB-105372. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 232040
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2017-11696

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 13315:769f9ae07b10

Timelineinfo

07/27/2017 🔍
08/09/2017 +13 days 🔍
08/09/2017 +0 days 🔍
08/09/2017 +0 days 🔍
08/15/2017 +6 days 🔍
08/16/2017 +1 days 🔍
12/27/2017 +133 days 🔍
03/07/2025 +2627 days 🔍

Sourcesinfo

Advisory: 143735
Researcher: Brian Carpenter
Status: Confirmed

CVE: CVE-2017-11696 (🔍)
GCVE (CVE): GCVE-0-2017-11696
GCVE (VulDB): GCVE-100-105370
SecurityFocus: 100345 - Mozilla NSS Multiple Heap Buffer Overflow and Denial of Service Vulnerabilities
SecurityTracker: 1039153

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 08/16/2017 04:06
Updated: 03/07/2025 10:47
Changes: 08/16/2017 04:06 (64), 11/07/2019 13:48 (5), 12/15/2022 18:45 (4), 06/23/2024 02:32 (21), 03/07/2025 10:47 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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