radare2 adf Command libr/core/cmd_anal.c anal_fcn_data memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in radare2. The impacted element is the function anal_fcn_data of the file libr/core/cmd_anal.c of the component adf Command Handler. This manipulation causes memory corruption. This vulnerability is handled as CVE-2020-27795. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability has been found in radare2 (Programming Tool Software) (affected version unknown) and classified as critical. Affected by this vulnerability is the function anal_fcn_data of the file libr/core/cmd_anal.c of the component adf Command Handler. 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. The summary by CVE is:

A segmentation fault was discovered in radare2 with adf command. In libr/core/cmd_anal.c, when command "adf" has no or wrong argument, anal_fcn_data (core, input + 1) --> RAnalFunction *fcn = r_anal_get_fcn_in (core->anal, core->offset, -1); returns null pointer for fcn causing segmentation fault later in ensure_fcn_range (fcn).

The weakness was released 08/20/2022 as 16215. It is possible to read the advisory at github.com. This vulnerability is known as CVE-2020-27795 since 10/27/2020. Technical details of the vulnerability are known, but there is no available exploit.

Applying the patch 4d3811681a80f92a53e795f6a64c4b0fc2c8dd22 is able to eliminate this problem. The bugfix is ready for download at github.com.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: 4d3811681a80f92a53e795f6a64c4b0fc2c8dd22

Timelineinfo

10/27/2020 🔍
08/20/2022 +661 days 🔍
08/20/2022 +0 days 🔍
09/24/2022 +35 days 🔍

Sourcesinfo

Advisory: 16215
Status: Confirmed

CVE: CVE-2020-27795 (🔍)
GCVE (CVE): GCVE-0-2020-27795
GCVE (VulDB): GCVE-100-206851

Entryinfo

Created: 08/20/2022 08:53
Updated: 09/24/2022 07:44
Changes: 08/20/2022 08:53 (43), 09/24/2022 07:44 (11)
Complete: 🔍
Cache ID: 216::103

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