CVE-2020-27743
CRITICALCVSS 9.8/10EPSS 1.71%
Last modified
CVE-2020-27743 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. libtac in pam_tacplus through 1.5.1 lacks a check for a failure of RAND_bytes()/RAND_pseudo_bytes(). This could lead to use of a non-random/predictable session_id.. EPSS estimates a 1.71% chance of exploitation in the next 30 days.
Description
libtac in pam_tacplus through 1.5.1 lacks a check for a failure of RAND_bytes()/RAND_pseudo_bytes(). This could lead to use of a non-random/predictable session_id.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Pam Tacplus Project | Pam Tacplus | <= 1.5.1 |
References
- https://github.com/kravietz/pam_tacplus/pull/163Third Party Advisory
- https://tools.ietf.org/html/rfc8907Technical Description, Third Party Advisory
- https://github.com/kravietz/pam_tacplus/pull/163Third Party Advisory
- https://tools.ietf.org/html/rfc8907Technical Description, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-27743?
libtac in pam_tacplus through 1.5.1 lacks a check for a failure of RAND_bytes()/RAND_pseudo_bytes(). This could lead to use of a non-random/predictable session_id.
How severe is CVE-2020-27743?
CVE-2020-27743 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 1.71% probability of exploitation in the next 30 days.
How do I fix CVE-2020-27743?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2020-27743?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST