CVE-2018-0739
Published: 27 March 2018
Constructed ASN.1 types with a recursive definition (such as can be found in PKCS7) could eventually exceed the stack given malicious input with excessive recursion. This could result in a Denial Of Service attack. There are no such structures used within SSL/TLS that come from untrusted sources so this is considered safe. Fixed in OpenSSL 1.1.0h (Affected 1.1.0-1.1.0g). Fixed in OpenSSL 1.0.2o (Affected 1.0.2b-1.0.2n).
Priority
Status
| Package | Release | Status |
|---|---|---|
|
openssl098 Launchpad, Ubuntu, Debian |
upstream |
Needs triage
|
| trusty |
Does not exist
(trusty was needed)
|
|
| xenial |
Does not exist
|
|
| artful |
Does not exist
|
|
| bionic |
Does not exist
|
|
| cosmic |
Does not exist
|
|
| disco |
Does not exist
|
|
|
openssl1.0 Launchpad, Ubuntu, Debian |
upstream |
Needs triage
|
| trusty |
Does not exist
|
|
| xenial |
Does not exist
|
|
| artful |
Does not exist
|
|
| bionic |
Released
(1.0.2n-1ubuntu5)
|
|
| cosmic |
Released
(1.0.2n-1ubuntu5)
|
|
| disco |
Does not exist
|
|
|
openssl Launchpad, Ubuntu, Debian |
artful |
Released
(1.0.2g-1ubuntu13.4)
|
| bionic |
Released
(1.1.0g-2ubuntu3)
|
|
| cosmic |
Released
(1.1.0g-2ubuntu3)
|
|
| disco |
Released
(1.1.0g-2ubuntu3)
|
|
| trusty |
Released
(1.0.1f-1ubuntu2.24)
|
|
| upstream |
Released
(1.0.2o,1.1.0h)
|
|
| xenial |
Released
(1.0.2g-1ubuntu4.11)
|
|
|
Patches: upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=9310d45087ae546e27e61ddf8f6367f29848220d (1.0.2) upstream: https://git.openssl.org/?p=openssl.git;a=commit;h=2ac4c6f7b2b2af20c0e2b0ba05367e454cd11b33 (1.1.0) |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |