GNU C Library up to 2.22 __hcreate_r size memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability was found in GNU C Library up to 2.22. It has been declared as problematic. This impacts the function __hcreate_r. Executing a manipulation of the argument size can lead to memory corruption. The identification of this vulnerability is CVE-2015-8778. The attack may be launched remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in GNU C Library up to 2.22 (Software Library). It has been declared as critical. This vulnerability affects the function __hcreate_r. The manipulation of the argument size 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:

Integer overflow in the GNU C Library (aka glibc or libc6) before 2.23 allows context-dependent attackers to cause a denial of service (application crash) or possibly execute arbitrary code via the size argument to the __hcreate_r function, which triggers out-of-bounds heap-memory access.

The weakness was shared 04/19/2016 (Website). The advisory is shared for download at lists.fedoraproject.org. This vulnerability was named CVE-2015-8778 since 01/19/2016. The attack needs to be approached locally. Required for exploitation is a single authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 88767 (Debian DSA-3480-1 : eglibc - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196484 (Ubuntu Security Notification for Eglibc, Glibc Vulnerabilities (USN-2985-1)).

Upgrading to version 2.23 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (88767), SecurityFocus (BID 83275†) and Vulnerability Center (SBV-58082†). The entries VDB-10583, VDB-73929, VDB-75092 and VDB-79344 are related to this item. Once again VulDB remains the best 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: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 88767
Nessus Name: Debian DSA-3480-1 : eglibc - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703480
OpenVAS Name: Debian Security Advisory DSA 3480-1 (eglibc - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: C Library 2.23

Timelineinfo

01/19/2016 🔍
02/16/2016 +28 days 🔍
02/17/2016 +1 days 🔍
02/17/2016 +0 days 🔍
04/07/2016 +50 days 🔍
04/12/2016 +5 days 🔍
04/19/2016 +6 days 🔍
04/19/2016 +0 days 🔍
04/20/2016 +1 days 🔍
07/25/2022 +2287 days 🔍

Sourcesinfo

Vendor: gnu.org

Advisory: RHSA-2017:1916
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8778 (🔍)
GCVE (CVE): GCVE-0-2015-8778
GCVE (VulDB): GCVE-100-82564
SecurityFocus: 83275 - GNU glibc 'misc/hsearch_r.c' Integer Overflow Vulnerability
Vulnerability Center: 58082 - F5 Multiple Big-IP Products Remote DoS and Code Execution Vulnerability Due to Integer Overflow in glibc, Medium

See also: 🔍

Entryinfo

Created: 04/20/2016 11:04
Updated: 07/25/2022 11:22
Changes: 04/20/2016 11:04 (73), 02/04/2019 12:24 (13), 07/25/2022 11:15 (3), 07/25/2022 11:22 (1)
Complete: 🔍
Cache ID: 216::103

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