PT-2021-19355 · Solarwinds · Solarwinds Network Performance Monitor+1

Chudypb + 1 · Published 2021-05-21 · Updated 2021-09-20 · CVE-2021-31474

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions SolarWinds Network Performance Monitor version 2020.2.1

Description This issue allows remote attackers to execute arbitrary code on affected installations. Authentication is not required to exploit this issue. The specific flaw exists within the SolarWinds.Serialization library, resulting from the lack of proper validation of user-supplied data, which can result in deserialization of untrusted data. An attacker can leverage this issue to execute code in the context of SYSTEM.

Recommendations For SolarWinds Network Performance Monitor version 2020.2.1, consider disabling the SolarWinds.Serialization library as a temporary workaround until a patch is available. Restrict access to the library to minimize the risk of exploitation. Avoid using user-supplied data in the affected library until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this issue.

Fix

RCE

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2021-31474

ZDI-21-602

Affected Products

Solarwinds Network Performance Monitor

Solarwinds.Serialization Library

References · 7

• https://zerodayinitiative.com/advisories/ZDI-21-602 · Security Note
• https://osv.dev/vulnerability/CVE-2021-31474 · Vendor Advisory
• https://documentation.solarwinds.com/en/success_center/sam/content/release_notes/sam_2020-2-5_release_notes.htm · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-31474 · Security Note
• https://t.me/cybersecuritytechnologies/3490 · Telegram Post
• https://t.me/cvenotify/15716 · Telegram Post
• https://t.me/cvenotify/14810 · Telegram Post