libdwarf prior 20161124 libdwarf/dwarf_macro5.c dwarf_skim_forms out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability was found in libdwarf (Programming Tool Software). It has been classified as critical. Affected is the function dwarf_skim_forms of the file libdwarf/dwarf_macro5.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Heap-based buffer overflow in the _dwarf_skim_forms function in libdwarf/dwarf_macro5.c in Libdwarf before 20161124 allows remote attackers to cause a denial of service (out-of-bounds read).

The bug was discovered 01/16/2016. The weakness was presented 03/23/2017 by Agostino Sarubbo with Gentoo (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2016-9275 since 11/11/2016. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 359 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 96368 (FreeBSD : libdwarf -- multiple vulnerabilities (83041ca7-d690-11e6-9171-14dae9d210b8)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276609 (Fedora Security Update for libdwarf (FEDORA-2017-15e7445d67)).

Upgrading to version 20161124 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 vulnerability database at Tenable (96368). See 93870, 96999, 97000 and 97001 for similar entries.

Productinfo

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Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 96368
Nessus Name: FreeBSD : libdwarf -- multiple vulnerabilities (83041ca7-d690-11e6-9171-14dae9d210b8)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for libdwarf FEDORA-2017-15e7445d67
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libdwarf 20161124
Patch: sourceforge.net

Timelineinfo

01/16/2016 🔍
11/09/2016 +298 days 🔍
11/11/2016 +2 days 🔍
01/09/2017 +59 days 🔍
01/10/2017 +1 days 🔍
03/23/2017 +72 days 🔍
03/23/2017 +0 days 🔍
03/24/2017 +1 days 🔍
11/14/2022 +2061 days 🔍

Sourcesinfo

Advisory: 583f8834
Researcher: Agostino Sarubbo
Organization: Gentoo
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9275 (🔍)
SecurityFocus: 94284 - libdwarf Multiple Heap Based Buffer Overflow Vulnerabilities
OSVDB: - CVE-2016-9275 - Libdwarf - Out of Bounds Read Issue

See also: 🔍

Entryinfo

Created: 03/24/2017 07:29
Updated: 11/14/2022 14:48
Changes: 03/24/2017 07:29 (79), 09/12/2020 21:24 (3), 11/14/2022 14:48 (5)
Complete: 🔍

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