CVE-2021-31893: Buffer Overflow
First published: Tue Jul 13 2021(Updated: )
A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versions < V5.6 SP2 HF3), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 HF2). The affected software contains a buffer overflow vulnerability while handling certain files that could allow a local attacker to trigger a denial-of-service condition or potentially lead to remote code execution.
Credit: productcert@siemens.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Siemens Simatic Pcs Firmware | <=8.2 | |
| Siemens Simatic Pcs Firmware | =9.0 | |
| Siemens Simatic Pcs Firmware | =9.0-sp1 | |
| Siemens Simatic Pcs Firmware | =9.0-sp2 | |
| Siemens Simatic Pcs | ||
| Siemens Simatic Pdm Firmware | <9.2 | |
| Siemens Simatic Pdm | ||
| Siemens Simatic Step 7 Firmware | <=5.6 | |
| Siemens SIMATIC STEP 7 | ||
| Siemens Sinamics Starter Firmware | <5.4 | |
| Siemens Sinamics Starter Firmware | =5.4 | |
| Siemens Sinamics Starter Firmware | =5.4-hotfix_1 | |
| Siemens Sinamics Starter Firmware | =5.4-hotfix_2 | |
| Siemens Sinamics Starter |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Frequently Asked Questions
What is the severity of CVE-2021-31893?
The severity of CVE-2021-31893 is 7.8 (high).
Which software versions are affected by CVE-2021-31893?
SIMATIC PCS 7 V8.2 and earlier, SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versions < V5.6 SP2 HF3), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 HF2).
What is the CVE ID for this vulnerability?
The CVE ID for this vulnerability is CVE-2021-31893.
How do I fix CVE-2021-31893?
Apply the relevant security patches or updates provided by Siemens.
Where can I find more information about CVE-2021-31893?
More information about CVE-2021-31893 can be found at the following reference: https://cert-portal.siemens.com/productcert/pdf/ssa-641963.pdf
- collector/nvd-index
- agent/author
- agent/tags
- agent/event
- agent/weakness
- agent/references
- agent/severity
- agent/type
- agent/description
- agent/remedy
- agent/first-publish-date
- agent/last-modified-date
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- vendor/siemens
- canonical/siemens simatic pcs firmware
- version/siemens simatic pcs firmware/8.2
- version/siemens simatic pcs firmware/9.0
- version/siemens simatic pcs firmware/9.0-sp1
- version/siemens simatic pcs firmware/9.0-sp2
- canonical/siemens simatic pcs
- canonical/siemens simatic pdm firmware
- canonical/siemens simatic pdm
- canonical/siemens simatic step 7 firmware
- version/siemens simatic step 7 firmware/5.6
- canonical/siemens simatic step 7
- canonical/siemens sinamics starter firmware
- version/siemens sinamics starter firmware/5.4
- version/siemens sinamics starter firmware/5.4-hotfix_1
- version/siemens sinamics starter firmware/5.4-hotfix_2
- canonical/siemens sinamics starter