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Vulnerability CVE-2020-25583
Published: 2021-03-29
| Description: |
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 when processing a DNSSL option, rtsold(8) decodes domain name labels per an encoding specified in RFC 1035 in which the first octet of each label contains the label's length. rtsold(8) did not validate label lengths correctly and could overflow the destination buffer. |
Type:
CWE-120 (Buffer Copy without Checking Size of Input ('Classic Buffer Overflow'))
CVSS2 => (AV:N/AC:L/Au:N/C:C/I:C/A:C)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
10/10 |
10/10 |
10/10 |
| Exploit range |
Attack complexity |
Authentication |
Remote |
Low |
No required |
| Confidentiality impact |
Integrity impact |
Availability impact |
Complete |
Complete |
Complete |
References: |
https://security.FreeBSD.org/advisories/FreeBSD-SA-20:32.rtsold.asc
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