VDB-125823 · CVE-2018-18521 · BID 98609

elfutils 0.174 ELF File arlib.c arlib_add_symbols divide by zero

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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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 denial of service vulnerability. CWE is classifying the issue as CWE-369. This is going to have an impact on availability.

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 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 local. 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 vulnerability database at Tenable (120790). See 99467, 99469, 99470 and 99471 for similar entries.



CPE 2.3infoedit

CPE 2.2infoedit


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: 🔍



VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍


Class: Denial of service
CWE: CWE-369
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 120790
Nessus Name: Fedora 28 : elfutils (2018-cb25ae4b94)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfoedit

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


Recommended: Upgrade
Status: 🔍

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

Upgrade: sourceware.org


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 🔍
04/05/2020 +458 days 🔍


Advisory: sourceware.org
Researcher: Agostino Sarubbo
Organization: Gentoo
Status: Confirmed

CVE: CVE-2018-18521 (🔍)
SecurityFocus: 98609 - elfutils CVE-2017-7608 Remote Denial of Service Vulnerability

See also: 🔍


Created: 10/20/2018 09:07 AM
Updated: 04/05/2020 08:02 PM
Changes: (7) vulnerability_discoverydate advisory_person_name advisory_company_name countermeasure_name countermeasure_date source_securityfocus_date source_securityfocus_class
Complete: 🔍


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