radare2 up to 3.1.0 libr/asm/p/asm_x86_nz.c parseOperand out-of-bounds

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 radare2 up to 3.1.0. It has been classified as critical. Affected is the function parseOperand of the file libr/asm/p/asm_x86_nz.c. This manipulation causes out-of-bounds. This vulnerability appears as CVE-2018-20456. The attack requires local access. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical was found in radare2 up to 3.1.0 (Programming Tool Software). Affected by this vulnerability is the function parseOperand of the file libr/asm/p/asm_x86_nz.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

In radare2 prior to 3.1.1, the parseOperand function inside libr/asm/p/asm_x86_nz.c may allow attackers to cause a denial of service (application crash in libr/util/strbuf.c via a stack-based buffer over-read) by crafting an input file, a related issue to CVE-2018-20455.

The bug was discovered 12/04/2018. The weakness was presented 12/25/2018 (Website). The advisory is shared at github.com. This vulnerability is known as CVE-2018-20456 since 12/25/2018. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 21 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 121260 (Fedora 29 : radare2 (2019-5750ad7485)), 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.

Upgrading to version 3.1.1 eliminates this vulnerability. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (121260). See VDB-128412, VDB-128414, VDB-128415 and VDB-128417 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Name

Version

License

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: Out-of-bounds
CWE: CWE-125 / 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: 121260
Nessus Name: Fedora 29 : radare2 (2019-5750ad7485)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: radare2 3.1.1
Patch: github.com

Timelineinfo

12/04/2018 🔍
12/25/2018 +21 days 🔍
12/25/2018 +0 days 🔍
12/25/2018 +0 days 🔍
12/26/2018 +1 days 🔍
01/19/2019 +24 days 🔍
01/22/2019 +3 days 🔍
06/22/2023 +1612 days 🔍

Sourcesinfo

Advisory: FEDORA-2019-5750ad7485
Status: Not defined

CVE: CVE-2018-20456 (🔍)
GCVE (CVE): GCVE-0-2018-20456
GCVE (VulDB): GCVE-100-128413
See also: 🔍

Entryinfo

Created: 12/26/2018 21:42
Updated: 06/22/2023 07:58
Changes: 12/26/2018 21:42 (72), 04/24/2020 11:02 (2), 06/22/2023 07:52 (5), 06/22/2023 07:58 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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