Botan up to 1.11.30 allowed_usage key management

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Botan up to 1.11.30. It has been rated as critical. This affects the function X509_Certificate::allowed_usage. This manipulation causes key management. This vulnerability is tracked as CVE-2016-6879. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Botan up to 1.11.30. It has been declared as critical. Affected by this vulnerability is the function X509_Certificate::allowed_usage. The manipulation with an unknown input leads to a key management vulnerability. The CWE definition for the vulnerability is CWE-320. As an impact it is known to affect integrity. The summary by CVE is:

The X509_Certificate::allowed_usage function in botan 1.11.x before 1.11.31 might allow attackers to have unspecified impact by leveraging a call with more than one Key_Usage set in the enum value.

The bug was discovered 08/30/2016. The weakness was disclosed 04/10/2017 (Website). It is possible to read the advisory at botan.randombit.net. This vulnerability is known as CVE-2016-6879 since 08/18/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1600.001 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 223 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 1.11.31 eliminates this vulnerability.

The entry VDB-99546 is pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Key management
CWE: CWE-320
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Botan 1.11.31

Timelineinfo

08/18/2016 🔍
08/30/2016 +12 days 🔍
04/10/2017 +223 days 🔍
04/10/2017 +0 days 🔍
04/11/2017 +1 days 🔍
08/28/2020 +1235 days 🔍

Sourcesinfo

Advisory: botan.randombit.net
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-6879 (🔍)
GCVE (CVE): GCVE-0-2016-6879
GCVE (VulDB): GCVE-100-99547
OSVDB: - CVE-2016-6879 - botan - Security Bypass Issue

See also: 🔍

Entryinfo

Created: 04/11/2017 09:42
Updated: 08/28/2020 16:40
Changes: 04/11/2017 09:42 (59), 08/28/2020 16:40 (3)
Complete: 🔍
Cache ID: 216:22D:103

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