CVE-2019-1551
Published: 6 December 2019
There is an overflow bug in the x64_64 Montgomery squaring procedure used in exponentiation with 512-bit moduli. No EC algorithms are affected. Analysis suggests that attacks against 2-prime RSA1024, 3-prime RSA1536, and DSA1024 as a result of this defect would be very difficult to perform and are not believed likely. Attacks against DH512 are considered just feasible. However, for an attack the target would have to re-use the DH512 private key, which is not recommended anyway. Also applications directly using the low level API BN_mod_exp may be affected if they use BN_FLG_CONSTTIME. Fixed in OpenSSL 1.1.1e (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u (Affected 1.0.2-1.0.2t).
Priority
Low
CVSS 3 base score: 5.3
Status
| Package | Release | Status |
|---|---|---|
|
edk2 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not built)
|
| disco |
Ignored
(reached end-of-life)
|
|
| eoan |
Not vulnerable
(code not built)
|
|
| focal |
Not vulnerable
(code not built)
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(code not built)
|
|
|
nodejs Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(uses system openssl1.0)
|
| disco |
Not vulnerable
(uses system openssl1.1)
|
|
| eoan |
Not vulnerable
(uses system openssl1.1)
|
|
| focal |
Not vulnerable
(uses system openssl1.1)
|
|
| precise |
Does not exist
|
|
| trusty |
Not vulnerable
(uses system openssl)
|
|
| upstream |
Needs triage
|
|
| xenial |
Not vulnerable
(uses system openssl)
|
|
|
openssl Launchpad, Ubuntu, Debian |
bionic |
Released
(1.1.1-1ubuntu2.1~18.04.6)
|
| disco |
Ignored
(reached end-of-life)
|
|
| eoan |
Released
(1.1.1c-1ubuntu4.1)
|
|
| focal |
Released
(1.1.1f-1ubuntu1)
|
|
| precise |
Not vulnerable
|
|
| trusty |
Not vulnerable
|
|
| upstream |
Released
(1.1.1.e)
|
|
| xenial |
Released
(1.0.2g-1ubuntu4.16)
|
|
|
openssl1.0 Launchpad, Ubuntu, Debian |
bionic |
Released
(1.0.2n-1ubuntu5.4)
|
| disco |
Does not exist
|
|
| eoan |
Does not exist
|
|
| focal |
Does not exist
|
|
| precise |
Does not exist
|
|
| trusty |
Does not exist
|
|
| upstream |
Needs triage
|
|
| xenial |
Does not exist
|
Notes
| Author | Note |
|---|---|
| mdeslaur | affected file isn't built in edk2 |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1551
- https://www.openssl.org/news/secadv/20191206.txt
- https://ubuntu.com/security/notices/USN-4376-1
- https://ubuntu.com/security/notices/USN-4504-1
- NVD
- Launchpad
- Debian