Lucene search

[email protected]CVE-2021-31893

HistoryJul 13, 2021 - 11:15 a.m.

CVE-2021-31893

2021-07-1311:15:09

CWE-120

[email protected]

web.nvd.nist.gov

cve-2021-31893

simatic pcs 7

simatic step 7

buffer overflow

denial-of-service

remote code execution

nvd

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

38.6%

JSON

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.

Affected configurations

NVD

Node

siemenssimatic_pcs_firmwareRange≤8.2

siemenssimatic_pcs_firmwareMatch9.0-

siemenssimatic_pcs_firmwareMatch9.0sp1

siemenssimatic_pcs_firmwareMatch9.0sp2

AND

siemenssimatic_pcsMatch-

Node

siemenssimatic_pdm_firmwareRange<9.2

AND

siemenssimatic_pdmMatch-

Node

siemenssimatic_step_7_firmwareRange≤5.6

AND

siemenssimatic_step_7Match-

Node

siemenssinamics_starter_firmwareRange<5.4

siemenssinamics_starter_firmwareMatch5.4-

siemenssinamics_starter_firmwareMatch5.4hotfix_1

siemenssinamics_starter_firmwareMatch5.4hotfix_2

AND

siemenssinamics_starterMatch-

CPENameOperatorVersion
siemens:simatic_pcs_firmwaresiemens simatic pcs firmwarele8.2
siemens:simatic_pcs_firmwaresiemens simatic pcs firmwareeq9.0

CPE	Name	Operator	Version
siemens:simatic_pcs_firmware	siemens simatic pcs firmware	le	8.2
siemens:simatic_pcs_firmware	siemens simatic pcs firmware	eq	9.0

CNA Affected

[
  {
    "product": "SIMATIC PCS 7 V8.2 and earlier",
    "vendor": "Siemens",
    "versions": [
      {
        "status": "affected",
        "version": "All versions"
      }
    ]
  },
  {
    "product": "SIMATIC PCS 7 V9.0",
    "vendor": "Siemens",
    "versions": [
      {
        "status": "affected",
        "version": "All versions < V9.0 SP3"
      }
    ]
  },
  {
    "product": "SIMATIC PDM",
    "vendor": "Siemens",
    "versions": [
      {
        "status": "affected",
        "version": "All versions < V9.2"
      }
    ]
  },
  {
    "product": "SIMATIC STEP 7 V5.X",
    "vendor": "Siemens",
    "versions": [
      {
        "status": "affected",
        "version": "All versions < V5.6 SP2 HF3"
      }
    ]
  },
  {
    "product": "SINAMICS STARTER (containing STEP 7 OEM version)",
    "vendor": "Siemens",
    "versions": [
      {
        "status": "affected",
        "version": "All versions < V5.4 HF2"
      }
    ]
  }
]

References

cert-portal.siemens.com/productcert/pdf/ssa-641963.pdf

Social References

7.2 High

CVSS2

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:L/Au:N/C:C/I:C/A:C

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

38.6%

JSON

Related for CVE-2021-31893

ics1 cvelist1 nvd1 cnvd1 prion1