CVE-2021-22893
Ivanti Pulse Connect Secure: Use-After-Free
As of , CVE-2021-22893 in Ivanti Pulse Connect Secure is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch this week.
- Exploited
- Yes: CISA listed it on 3 November 2021
- US federal deadline
- 3 May 2022181 days after CISA listed it. US federal civilian agencies must fix it by then.
- Used in ransomware campaigns
- Known
- EPSS score
- 0.47Higher than 98% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
- EPSS when listed
- Not availableCISA listed it before 4 February 2022, where the EPSS files we read begin.
- Public exploit
- None foundNeither Metasploit nor Exploit-DB lists one.
- Fix
- No vendor link in CISA's entry
What CISA says to do
Apply updates per vendor instructions.
CISA's required action
What the flaw is
Ivanti Pulse Connect Secure contains a use-after-free vulnerability that allow a remote, unauthenticated attacker to execute code via license services.
CISA's description
Pulse Connect Secure 9.0R3/9.1R1 and higher is vulnerable to an authentication bypass vulnerability exposed by the Windows File Share Browser and Pulse Secure Collaboration features of Pulse Connect Secure that can allow an unauthenticated user to perform remote arbitrary code execution on the Pulse Connect Secure gateway. This vulnerability has been exploited in the wild.
The CVE record's description, from hackerone
- CVE published
- 23 April 2021
- Assigned by
- hackerone
- CVSS
- 10.0 Critical (CVSS 3.1, from CISA-ADP)
- CWE-287
- Improper Authentication
- CISA SSVC, exploitation
- active
- CISA SSVC, automatable
- yes
- CISA SSVC, technical impact
- total
Timeline
- The CVE record was published.
- CISA added it to its list of exploited vulnerabilities.
- The US federal deadline to fix it.
- CISA changed its entry. Deadline moved from 23 April 2021 to 3 May 2022.
Pulse Connect Secure: other exploited entries
| Vulnerability | Product | Our group | Listed | Deadline | EPSS |
|---|---|---|---|---|---|
| CVE-2019-11510Arbitrary File Read | Ivanti Pulse Connect Secure | Patch this weekRansomware use; Metasploit module; EPSS 0.99 | 0.99 | ||
| CVE-2020-8260Code Execution | Ivanti Pulse Connect Secure | Patch this weekMetasploit module; EPSS 0.96 | 0.96 | ||
| CVE-2020-8243Code Execution | Ivanti Pulse Connect Secure | Patch this weekEPSS 0.91 | 0.91 | ||
| CVE-2021-22894Collaboration Suite Buffer Overflow | Ivanti Pulse Connect Secure | Patch soon | 0.41 | ||
| CVE-2021-22899Command Injection | Ivanti Pulse Connect Secure | Patch soon | 0.23 | ||
| CVE-2021-22900Unrestricted File Upload | Ivanti Pulse Connect Secure | Patch soon | 0.14 |
Read further
- CVE recordcve.org
- NVD entrynvd.nist.gov
- CISA's catalogcisa.gov
- EPSS for this CVEapi.first.org