UBUNTU-CVE-2021-20322
A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.
02 / AFFECTED SOFTWARE
Affected packages
50 explicit affected versions
6 explicit affected versions
6 explicit affected versions
6 explicit affected versions
9 explicit affected versions
191 explicit affected versions
75 explicit affected versions
35 explicit affected versions
55 explicit affected versions
28 explicit affected versions
87 explicit affected versions
4 explicit affected versions
121 explicit affected versions
23 explicit affected versions
1 explicit affected versions
1 explicit affected versions
21 explicit affected versions
1 explicit affected versions
7 explicit affected versions
12 explicit affected versions
6 explicit affected versions
1 explicit affected versions
7 explicit affected versions
5 explicit affected versions
38 explicit affected versions
46 explicit affected versions
6 explicit affected versions
38 explicit affected versions
120 explicit affected versions
30 explicit affected versions
10 explicit affected versions
22 explicit affected versions
53 explicit affected versions
1 explicit affected versions
20 explicit affected versions
144 explicit affected versions
1 explicit affected versions
29 explicit affected versions
13 explicit affected versions
69 explicit affected versions
1 explicit affected versions
40 explicit affected versions
33 explicit affected versions
10 explicit affected versions
188 explicit affected versions
54 explicit affected versions
11 explicit affected versions
12 explicit affected versions
77 explicit affected versions
7 explicit affected versions
38 explicit affected versions
2 explicit affected versions
73 explicit affected versions
165 explicit affected versions
34 explicit affected versions
1 explicit affected versions
6 explicit affected versions
17 explicit affected versions
32 explicit affected versions
1 explicit affected versions
1 explicit affected versions
35 explicit affected versions
5 explicit affected versions
28 explicit affected versions
1 explicit affected versions
28 explicit affected versions
7 explicit affected versions
1 explicit affected versions
31 explicit affected versions
10 explicit affected versions
26 explicit affected versions
44 explicit affected versions
16 explicit affected versions
5 explicit affected versions
22 explicit affected versions
38 explicit affected versions
9 explicit affected versions
28 explicit affected versions
97 explicit affected versions
9 explicit affected versions
85 explicit affected versions
62 explicit affected versions
4 explicit affected versions
19 explicit affected versions
53 explicit affected versions
28 explicit affected versions
43 explicit affected versions
1 explicit affected versions
102 explicit affected versions
30 explicit affected versions
4 explicit affected versions
17 explicit affected versions
1 explicit affected versions
9 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
A flaw in the processing of received ICMP errors (ICMP fragment needed and ICMP redirect) in the Linux kernel functionality was found to allow the ability to quickly scan open UDP ports. This flaw allows an off-path remote user to effectively bypass the source port UDP randomization. The highest threat from this vulnerability is to confidentiality and possibly integrity, because software that relies on UDP source port randomization are indirectly affected as well.
05 / REFERENCES