CVE-2018-9860
Published: 12 April 2018
An issue was discovered in Botan 1.11.32 through 2.x before 2.6.0. An off-by-one error when processing malformed TLS-CBC ciphertext could cause the receiving side to include in the HMAC computation exactly 64K bytes of data following the record buffer, aka an over-read. The MAC comparison will subsequently fail and the connection will be closed. This could be used for denial of service. No information leak occurs.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
botan Launchpad, Ubuntu, Debian |
artful |
Does not exist
|
| bionic |
Needed
|
|
| groovy |
Not vulnerable
(2.9.0-2)
|
|
| hirsute |
Not vulnerable
(2.9.0-2)
|
|
| impish |
Not vulnerable
(2.9.0-2)
|
|
| jammy |
Not vulnerable
(2.9.0-2)
|
|
| kinetic |
Not vulnerable
(2.9.0-2)
|
|
| lunar |
Not vulnerable
(2.9.0-2)
|
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Not vulnerable
(2.9.0-2)
|
|
| eoan |
Not vulnerable
(2.9.0-2)
|
|
| focal |
Not vulnerable
(2.9.0-2)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(2.4.0-6)
|
|
| xenial |
Does not exist
|
|
|
botan1.10 Launchpad, Ubuntu, Debian |
trusty |
Needs triage
|
| groovy |
Does not exist
|
|
| hirsute |
Does not exist
|
|
| impish |
Does not exist
|
|
| jammy |
Does not exist
|
|
| kinetic |
Does not exist
|
|
| lunar |
Does not exist
|
|
| artful |
Ignored
(end of life)
|
|
| bionic |
Not vulnerable
(code not present)
|
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| upstream |
Not vulnerable
(code not present)
|
|
| xenial |
Not vulnerable
(code not present)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |