Unauthenticated service interruption via IPsec buffer overwrite
Published Nov 13, 2024 · Updated Nov 23, 2024
Out-of-bounds write in IPsec in Ivanti Connect Secure before 22.7R2.1 allows remote attackers to interrupt VPN service via network traffic. The IPsec component writes beyond a buffer boundary while processing attacker-controlled network input. No authentication or user interaction is required, and successful exploitation causes denial of service; the 9.1Rx branch is not affected.
Summary
What happened
Out-of-bounds write in IPsec in Ivanti Connect Secure before 22.7R2.1 allows remote attackers to interrupt VPN service via network traffic. The IPsec component writes beyond a buffer boundary while processing attacker-controlled network input. No authentication or user interaction is required, and successful exploitation causes denial of service; the 9.1Rx branch is not affected.
The record
- CVE
- CVE-2024-38649
- Published
- Nov 13, 2024
- Updated
- Nov 23, 2024
- Vendor
- Ivanti
- Product
- Connect Secure
- Classifications
- CWE-125, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Nov 13, 2024CVE publishedPublication date reported by the CVE source.
- Nov 23, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <22.7R2.1
- Affected versionversion=22.7R2.1 <22.7R2.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo