CVE-2021-44151
As the session cookies are small, an attacker can hijack any existing sessions by bruteforcing the 4 hex-character session cookie on the Windows version (the Linux version appears to have 8 characters).
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.53%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in Reprise RLM 14.2. As the session cookies are small, an attacker can hijack any existing sessions by bruteforcing the 4 hex-character session cookie on the Windows version (the Linux version appears to have 8 characters). An attacker can obtain the static part of the cookie (cookie name) by first making a request to any page on the application (e.g., /goforms/menu) and saving the name of the cookie sent with the response. The attacker can then use the name of the cookie and try to request that same page, setting a random value for the cookie. If any user has an active session, the page should return with the authorized content, when a valid cookie value is hit.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 2.53% probability · 84th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-330
- Affected
- reprisesoftware/reprise license manager
- Source
- cve@mitre.org
References
- http://packetstormsecurity.com/files/165191/Reprise-License-Manager-14.2-Session-Hijacking.htmlThird Party Advisory, VDB Entry
- https://reprisesoftware.com/admin/rlm-admin-download.php?&euagree=yesProduct, Vendor Advisory
- https://www.reprisesoftware.com/RELEASE_NOTESBroken Link
- http://packetstormsecurity.com/files/165191/Reprise-License-Manager-14.2-Session-Hijacking.htmlThird Party Advisory, VDB Entry
- https://reprisesoftware.com/admin/rlm-admin-download.php?&euagree=yesProduct, Vendor Advisory
- https://www.reprisesoftware.com/RELEASE_NOTESBroken Link
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.