Vulnerability-Lookup

GSD-2021-35211

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability.

Aliases

CVE-2021-35211

Aliases

CVE-2021-35211

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-35211",
    "description": "Microsoft discovered a remote code execution (RCE) vulnerability in the SolarWinds Serv-U product utilizing a Remote Memory Escape Vulnerability. If exploited, a threat actor may be able to gain privileged access to the machine hosting Serv-U Only. SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 are affected by this vulnerability.",
    "id": "GSD-2021-35211"
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      "remediation": "unknown",
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      },
      "lastModifiedDate": "2022-07-12T17:42Z",
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}

CVE-2021-35211 (GCVE-0-2021-35211)

Vulnerability from cvelistv5 – Published: 2021-07-14 20:55 – Updated: 2025-10-21 23:25

Title

Serv-U Remote Memory Escape Vulnerability

Summary

Severity

9 (Critical)


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

SSVC

Exploitation: active Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-02-04 19:06 UTC

CWE

Memory Escape Vulnerability in Solarwinds Serv-U
CWE-787 - Out-of-bounds Write

Assigner

SolarWinds mitre root

References

3 references

URL	Tags
https://www.solarwinds.com/trust-center/security-…	x_refsource_MISC
https://www.microsoft.com/security/blog/2021/07/1…	x_refsource_MISC
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
SolarWinds	Serv-U Managed File Transfer Server and Serv-U Secured FTP	Affected: SolarWinds Serv-U , < 15.2.3 HF1 (custom)

Date Public

2021-07-13 00:00

Credits

SolarWinds would like to thank the Microsoft Threat Intelligence Center (MSTIC) and Microsoft Offensive Security Research teams for reporting on the issue in a responsible manner.

Show details on NVD website

JSON

To clipboard

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        "metrics": [
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.