Siemens SIMATIC PCS 7 buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Siemens SIMATIC PCS 7, SIMATIC PDM, SIMATIC STEP 7 and SINAMICS STARTER and classified as critical. Affected is an unknown function. Such manipulation leads to buffer overflow. This vulnerability is traded as CVE-2021-31893. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Siemens SIMATIC PCS 7, SIMATIC PDM, SIMATIC STEP 7 and SINAMICS STARTER (SCADA Software) (the affected version is unknown). Affected by this issue is an unknown code. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability.

The weakness was shared 07/13/2021 as ssa-641963. The advisory is shared for download at cert-portal.siemens.com. This vulnerability is handled as CVE-2021-31893. There are neither technical details nor an exploit publicly available.

Upgrading eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
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: Buffer overflow
CWE: CWE-120 / 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: 🔍

Timelineinfo

04/29/2021 🔍
07/13/2021 +75 days 🔍
07/13/2021 +0 days 🔍
07/16/2021 +3 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-641963
Status: Confirmed

CVE: CVE-2021-31893 (🔍)
GCVE (CVE): GCVE-0-2021-31893
GCVE (VulDB): GCVE-100-178364

Entryinfo

Created: 07/13/2021 16:25
Updated: 07/16/2021 02:31
Changes: 07/13/2021 16:25 (37), 07/16/2021 02:31 (5)
Complete: 🔍
Cache ID: 216::103

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