Siemens SIMATIC CP 343-1 Service Port 102 memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5$5k-$25k0.00

Summaryinfo

A vulnerability has been found in Siemens SIMATIC CP 343-1, SIMATIC CP 343-1 Advanced, SIMATIC CP 343-1 ERPC, SIMATIC CP 343-1 Lean, SIMATIC CP 443-1 and SIMATIC CP 443-1 Advanced and classified as critical. Affected is an unknown function of the component Service Port 102. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-2021-33737. No exploit exists.

Detailsinfo

A vulnerability, which was classified as critical, was found in Siemens SIMATIC CP 343-1, SIMATIC CP 343-1 Advanced, SIMATIC CP 343-1 ERPC, SIMATIC CP 343-1 Lean, SIMATIC CP 443-1 and SIMATIC CP 443-1 Advanced (SCADA Software). This affects an unknown part of the component Service Port 102. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability.

The weakness was disclosed 09/14/2021 as ssa-549234. The advisory is shared at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2021-33737 since 05/28/2021. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 09/14/2021).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 6.5
VulDB Temp Score: 6.5
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: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/28/2021 🔍
09/14/2021 +109 days 🔍
09/14/2021 +0 days 🔍
09/16/2021 +2 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-549234
Status: Confirmed

CVE: CVE-2021-33737 (🔍)
GCVE (CVE): GCVE-0-2021-33737
GCVE (VulDB): GCVE-100-182577

Entryinfo

Created: 09/14/2021 15:35
Updated: 09/16/2021 19:35
Changes: 09/14/2021 15:35 (38), 09/16/2021 19:35 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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