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

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

A vulnerability was found in Network Security Services (unknown version). It has been classified as critical. This affects the function alloc_segs of the file lib/dbm/src/hash.c. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Heap-based buffer overflow in the alloc_segs 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 shared 08/09/2017 by Brian Carpenter as confirmed mailinglist post (Full-Disclosure). The advisory is shared at seclists.org. This vulnerability is uniquely identified as CVE-2017-11695 since 07/27/2017. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

The exploit is shared for download at packetstormsecurity.com. It is declared as proof-of-concept.

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

The vulnerability is also documented in the databases at SecurityFocus (BID 100345†) and SecurityTracker (ID 1039153†).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

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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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 🔍
06/23/2024 +2370 days 🔍

Sourcesinfo

Advisory: 143735
Researcher: Brian Carpenter
Status: Confirmed

CVE: CVE-2017-11695 (🔍)
SecurityFocus: 100345 - Mozilla NSS Multiple Heap Buffer Overflow and Denial of Service Vulnerabilities
SecurityTracker: 1039153

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

Entryinfo

Created: 08/16/2017 04:06 AM
Updated: 06/23/2024 02:32 AM
Changes: 08/16/2017 04:06 AM (64), 11/07/2019 01:43 PM (5), 12/15/2022 06:37 PM (4), 06/23/2024 02:32 AM (21)
Complete: 🔍
Cache ID: 98:4BB:40

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