libiberty Binary cplus-dem.c do_type memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

Summaryinfo

A vulnerability was found in libiberty. It has been declared as critical. This affects the function do_type of the file cplus-dem.c of the component Binary Handler. Such manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2016-4492. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in libiberty (version now known). Affected by this issue is the function do_type of the file cplus-dem.c of the component Binary Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Buffer overflow in the do_type function in cplus-dem.c in libiberty allows remote attackers to cause a denial of service (segmentation fault and crash) via a crafted binary.

The bug was discovered 05/05/2016. The weakness was disclosed 02/24/2017 (Website). The advisory is shared for download at gcc.gnu.org. This vulnerability is handled as CVE-2016-4492 since 05/05/2016. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 74 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 92380 (Debian DLA-552-1 : binutils 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 196831 (Ubuntu Security Notification for Valgrind Vulnerabilities (USN-3337-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (92380) and SecurityFocus (BID 90014†). The entries VDB-96611, VDB-97283, VDB-97287 and VDB-97288 are pretty similar. 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: 5.9
VulDB Meta Temp Score: 5.7

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.4
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: 92380
Nessus Name: Debian DLA-552-1 : binutils security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for libiberty USN-3368-1
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/03/2016 🔍
05/05/2016 +2 days 🔍
05/05/2016 +0 days 🔍
07/18/2016 +74 days 🔍
07/19/2016 +1 days 🔍
02/24/2017 +220 days 🔍
02/24/2017 +0 days 🔍
02/25/2017 +1 days 🔍
08/17/2020 +1269 days 🔍

Sourcesinfo

Advisory: gcc.gnu.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-4492 (🔍)
GCVE (CVE): GCVE-0-2016-4492
GCVE (VulDB): GCVE-100-97292
SecurityFocus: 90014 - GNU GCC 'lilibiberty/cplus-dem.c' Multiple Denial of Service Vulnerabilities
OSVDB: - CVE-2016-4492 - libiberty - Buffer Overflow Issue

See also: 🔍

Entryinfo

Created: 02/25/2017 09:55
Updated: 08/17/2020 20:05
Changes: 02/25/2017 09:55 (73), 08/17/2020 20:05 (6)
Complete: 🔍
Cache ID: 216:F1E:103

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