elfutils 0.174 ELF File arlib.c arlib_add_symbols divide by zero

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

Summaryinfo

A vulnerability was found in elfutils 0.174. It has been classified as problematic. Impacted is the function arlib_add_symbols of the file arlib.c of the component ELF File Handler. Performing a manipulation results in divide by zero. This vulnerability was named CVE-2018-18521. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in elfutils 0.174. This affects the function arlib_add_symbols of the file arlib.c of the component ELF File Handler. The manipulation with an unknown input leads to a divide by zero vulnerability. CWE is classifying the issue as CWE-369. The product divides a value by zero. This is going to have an impact on availability. The summary by CVE is:

Divide-by-zero vulnerabilities in the function arlib_add_symbols() in arlib.c in elfutils 0.174 allow remote attackers to cause a denial of service (application crash) with a crafted ELF file, as demonstrated by eu-ranlib, because a zero sh_entsize is mishandled.

The bug was discovered 10/18/2018. The weakness was presented 10/19/2018 by Agostino Sarubbo with Gentoo (Website). It is possible to read the advisory at sourceware.org. This vulnerability is uniquely identified as CVE-2018-18521 since 10/19/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 120790 (Fedora 28 : elfutils (2018-cb25ae4b94)), 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 176681 (Debian Security Update for elfutils (DLA 1689-1)).

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 databases at Tenable (120790) and SecurityFocus (BID 98609†). See VDB-99467, VDB-99469, VDB-99470 and VDB-99471 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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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: 🔍
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Exploitinginfo

Class: Divide by zero
CWE: CWE-369 / CWE-404
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: 120790
Nessus Name: Fedora 28 : elfutils (2018-cb25ae4b94)
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: 🔍

Timelineinfo

04/09/2017 🔍
10/18/2018 +557 days 🔍
10/19/2018 +0 days 🔍
10/19/2018 +0 days 🔍
10/19/2018 +0 days 🔍
10/20/2018 +1 days 🔍
11/21/2018 +32 days 🔍
01/03/2019 +43 days 🔍
05/30/2023 +1608 days 🔍

Sourcesinfo

Advisory: FEDORA-2018-cb25ae4b94
Researcher: Agostino Sarubbo
Organization: Gentoo
Status: Confirmed

CVE: CVE-2018-18521 (🔍)
GCVE (CVE): GCVE-0-2018-18521
GCVE (VulDB): GCVE-100-125823
SecurityFocus: 98609 - elfutils CVE-2017-7608 Remote Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 10/20/2018 09:07
Updated: 05/30/2023 14:30
Changes: 10/20/2018 09:07 (74), 04/05/2020 20:02 (7), 05/30/2023 14:25 (4), 05/30/2023 14:30 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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