CVE-2020-25577
high-risk
Published 2021-03-29
In FreeBSD 12.2-STABLE before r368250, 11.4-STABLE before r368253, 12.2-RELEASE before p1, 12.1-RELEASE before p11 and 11.4-RELEASE before p5 rtsold(8) does not verify that the RDNSS option does not extend past the end of the received packet before processing its contents. While the kernel currently ignores such malformed packets, it passes them to userspace programs. Any programs expecting the kernel to do validation may be vulnerable to an overflow.
Do I need to act?
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0.58% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (15)
Affected Vendors
References (4)
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210423-0001/
Third Party Advisory
https://security.netapp.com/advisory/ntap-20210423-0001/
52
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
2/34 · Minimal
Exposure
18/34 · Moderate