10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
0.967 High
EPSS
Percentile
99.5%
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.
Recent assessments:
NinjaOperator at July 12, 2021 4:00pm UTC reported:
SolarWinds was recently notified by Microsoft of a security vulnerability (RCE) related to Serv-U Managed File Transfer Server and Serv-U Secured FTP and have developed a hotfix to resolve this vulnerability. While Microsoft’s research indicates this vulnerability exploit involves a limited, targeted set of customers and a single threat actor, our joint teams have mobilized to address it quickly.
The vulnerability exists in the latest Serv-U version 15.2.3 HF1 released May 5, 2021, and all prior versions. A threat actor who successfully exploits CVE-2021-34527 can run arbitrary code with SYSTEM privileges and install programs; view, change, or delete data, and run programs.
wvu-r7 at July 22, 2021 4:35pm UTC reported:
SolarWinds was recently notified by Microsoft of a security vulnerability (RCE) related to Serv-U Managed File Transfer Server and Serv-U Secured FTP and have developed a hotfix to resolve this vulnerability. While Microsoft’s research indicates this vulnerability exploit involves a limited, targeted set of customers and a single threat actor, our joint teams have mobilized to address it quickly.
The vulnerability exists in the latest Serv-U version 15.2.3 HF1 released May 5, 2021, and all prior versions. A threat actor who successfully exploits CVE-2021-34527 can run arbitrary code with SYSTEM privileges and install programs; view, change, or delete data, and run programs.
Assessed Attacker Value: 5
Assessed Attacker Value: 5Assessed Attacker Value: 4
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-35211
www.microsoft.com/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit
www.microsoft.com/security/blog/2021/09/02/a-deep-dive-into-the-solarwinds-serv-u-ssh-vulnerability/
www.solarwinds.com/trust-center/security-advisories/cve-2021-35211
10 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
10 High
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:L/Au:N/C:C/I:C/A:C
0.967 High
EPSS
Percentile
99.5%