vulnerability
Oracle Solaris 11: CVE-2020-25687 (11.4 SRU 31.88.5)
Severity | CVSS | Published | Added | Modified |
---|---|---|---|---|
7 | (AV:N/AC:M/Au:N/C:N/I:N/A:C) | Jan 20, 2021 | Mar 17, 2021 | Feb 17, 2022 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:N/I:N/A:C)
Published
Jan 20, 2021
Added
Mar 17, 2021
Modified
Feb 17, 2022
Description
A flaw was found in dnsmasq before version 2.83. A heap-based buffer overflow was discovered in dnsmasq when DNSSEC is enabled and before it validates the received DNS entries. This flaw allows a remote attacker, who can create valid DNS replies, to cause an overflow in a heap-allocated memory. This flaw is caused by the lack of length checks in rfc1035.c:extract_name(), which could be abused to make the code execute memcpy() with a negative size in sort_rrset() and cause a crash in dnsmasq, resulting in a denial of service. The highest threat from this vulnerability is to system availability.
Solution
oracle-solaris-11-4-upgrade-service-network-dnsmasq-2-84-11-4-31-0-1-88-1

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