elfutils 0.173 libdw dwarf_getabbrev.c dwarf_getabbrev memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in elfutils 0.173. This affects the function dwarf_getabbrev of the file dwarf_getabbrev.c of the component libdw. Executing a manipulation can lead to memory corruption. This vulnerability is tracked as CVE-2018-16403. The attack is restricted to local execution. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in elfutils 0.173. It has been declared as critical. This vulnerability affects the function dwarf_getabbrev of the file dwarf_getabbrev.c of the component libdw. 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:

libdw in elfutils 0.173 checks the end of the attributes list incorrectly in dwarf_getabbrev in dwarf_getabbrev.c and dwarf_hasattr in dwarf_hasattr.c, leading to a heap-based buffer over-read and an application crash.

The bug was discovered 09/04/2018. The weakness was disclosed 09/03/2018 (Website). The advisory is shared for download at sourceware.org. This vulnerability was named CVE-2018-16403 since 09/03/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 120279 (Fedora 28 : elfutils (2018-1eec1f0d17)), 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 277557 (Fedora Security Update for elfutils (FEDORA-2018-1eec1f0d17)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (120279). The entries VDB-123355 and VDB-123531 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
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: 🔍

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: 120279
Nessus Name: Fedora 28 : elfutils (2018-1eec1f0d17)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: 6983e59b727458a6c64d9659c85f08218bc4fcda

Timelineinfo

09/03/2018 🔍
09/03/2018 +0 days 🔍
09/03/2018 +0 days 🔍
09/04/2018 +1 days 🔍
09/04/2018 +0 days 🔍
10/02/2018 +28 days 🔍
01/03/2019 +93 days 🔍
05/06/2023 +1584 days 🔍

Sourcesinfo

Advisory: FEDORA-2018-1eec1f0d17
Status: Confirmed

CVE: CVE-2018-16403 (🔍)
GCVE (CVE): GCVE-0-2018-16403
GCVE (VulDB): GCVE-100-123532
See also: 🔍

Entryinfo

Created: 09/04/2018 06:48
Updated: 05/06/2023 16:56
Changes: 09/04/2018 06:48 (71), 03/20/2020 10:11 (3), 05/06/2023 16:49 (6), 05/06/2023 16:56 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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