Contiki-NG up to 4.5 RPL-Classic/RPL-Lite rpl-ext-header.c rpl_ext_header_srh_update addr_ptr out-of-bounds write

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Contiki-NG up to 4.5. This issue affects the function rpl_ext_header_srh_update of the file rpl-ext-header.c of the component RPL-Classic/RPL-Lite. Such manipulation of the argument addr_ptr leads to out-of-bounds write. This vulnerability is documented as CVE-2021-21257. The attack can be executed remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Contiki-NG up to 4.5. It has been rated as critical. Affected by this issue is the function rpl_ext_header_srh_update of the file rpl-ext-header.c of the component RPL-Classic/RPL-Lite. The manipulation of the argument addr_ptr with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The weakness was released 06/19/2021. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2021-21257. There are known technical details, but no exploit is available.

Upgrading to version 4.6 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

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

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / 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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Contiki-NG 4.6
Patch: github.com

Timelineinfo

12/22/2020 🔍
06/19/2021 +178 days 🔍
06/19/2021 +0 days 🔍
06/21/2021 +2 days 🔍

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-21257 (🔍)
GCVE (CVE): GCVE-0-2021-21257
GCVE (VulDB): GCVE-100-177236

Entryinfo

Created: 06/19/2021 07:55
Updated: 06/21/2021 16:32
Changes: 06/19/2021 07:55 (37), 06/19/2021 07:57 (4), 06/21/2021 16:24 (3), 06/21/2021 16:32 (1)
Complete: 🔍
Cache ID: 216::103

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