GNU C Library up to 2.1.1 LD_HWCAP_MASK resource management

CVSS Meta Temp Score
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CTI Interest Score
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5.4$0-$5k0.00

Summaryinfo

A vulnerability was found in GNU C Library up to 2.1.1. It has been classified as critical. This affects an unknown part. Performing a manipulation of the argument LD_HWCAP_MASK as part of Environment Variable results in resource management. This vulnerability is cataloged as CVE-2017-1000408. The attack must be initiated from a local position. Furthermore, there is an exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in GNU C Library up to 2.1.1 (Software Library). This affects an unknown code block. The manipulation of the argument LD_HWCAP_MASK as part of a Environment Variable leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

A memory leak in glibc 2.1.1 (released on May 24, 1999) can be reached and amplified through the LD_HWCAP_MASK environment variable. Please note that many versions of glibc are not vulnerable to this issue if patched for CVE-2017-1000366.

The bug was discovered 12/11/2017. The weakness was shared 02/01/2018 with Qualys Corporation as EDB-ID 43331 as confirmed exploit (Exploit-DB). It is possible to read the advisory at exploit-db.com. This vulnerability is uniquely identified as CVE-2017-1000408 since 12/05/2017. The exploitability is told to be easy. Attacking locally is a requirement. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

A public exploit has been developed by Qualys Corporation and been published before and not just after the advisory. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 6798 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 105918 (Fedora 27 : glibc (2017-828f8a8fc6)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370680 (glibc ld.so Memory Leak and Buffer Overflow Vulnerabilities - Zero Day).

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability. Some versions of glibc are not vulnerable to this issue if patched for CVE-2017-1000366.

The vulnerability is also documented in the databases at Exploit-DB (43331) and Tenable (105918). The entries VDB-112720 and VDB-112777 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

VulDB Base Score: 3.3
VulDB Temp Score: 3.0
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: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Qualys Corporation
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 105918
Nessus Name: Fedora 27 : glibc (2017-828f8a8fc6)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841108
OpenVAS Name: SuSE Update for glibc openSUSE-SU-2018:0089-1 (glibc)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/24/1999 🔍
12/05/2017 +6770 days 🔍
12/11/2017 +6 days 🔍
12/13/2017 +2 days 🔍
12/13/2017 +0 days 🔍
01/02/2018 +20 days 🔍
01/15/2018 +13 days 🔍
01/31/2018 +16 days 🔍
02/01/2018 +1 days 🔍
02/02/2018 +1 days 🔍
12/26/2024 +2518 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: EDB-ID 43331
Organization: Qualys Corporation
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-1000408 (🔍)
GCVE (CVE): GCVE-0-2017-1000408
GCVE (VulDB): GCVE-100-112719
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 02/02/2018 07:58
Updated: 12/26/2024 00:33
Changes: 02/02/2018 07:58 (86), 12/31/2019 20:30 (3), 12/26/2024 00:33 (17)
Complete: 🔍
Cache ID: 216::103

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