CVE-2020-25577

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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 10.0 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

10.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:32.rtsold.asc	Vendor Advisory
https://security.netapp.com/advisory/ntap-20210423-0001/	Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:freebsd:freebsd:11.4:-::::::
	cpe:2.3:o:freebsd:freebsd:11.4:p1::::::
	cpe:2.3:o:freebsd:freebsd:11.4:p2::::::
	cpe:2.3:o:freebsd:freebsd:11.4:p3::::::
	cpe:2.3:o:freebsd:freebsd:12.1:-::::::
	cpe:2.3:o:freebsd:freebsd:12.1:p1::::::
	cpe:2.3:o:freebsd:freebsd:12.1:p2::::::
	cpe:2.3:o:freebsd:freebsd:12.1:p3::::::
	cpe:2.3:o:freebsd:freebsd:12.1:p4::::::
	cpe:2.3:o:freebsd:freebsd:12.1:p5::::::
	cpe:2.3:o:freebsd:freebsd:12.1:p6::::::
	cpe:2.3:o:freebsd:freebsd:12.1:p7::::::
	cpe:2.3:o:freebsd:freebsd:12.1:p9::::::
	cpe:2.3:o:freebsd:freebsd:12.1:p8::::::
	cpe:2.3:o:freebsd:freebsd:12.2:-::::::

Information

Published : 2021-03-29 13:15

Updated : 2021-06-03 12:12

NVD link : CVE-2020-25577

Mitre link : CVE-2020-25577

JSON object : View

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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Products Affected

freebsd

freebsd

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