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OVAL Definitions
>
OVAL Definition Details
Id
oval:ru.altx-soft.freebsd:def:10020
[Eng]
Version
4
Class
vulnerability
ALTXid
314991
Language
Russian
Severity
Medium
Title
Уязвимость в OpenSSL (CVE-2019-1551)
Description
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-dev (Affected 1.1.1-1.1.1d). Fixed in OpenSSL 1.0.2u-dev (Affected 1.0.2-1.0.2t).
Family
unix
Platform
FreeBSD
Product
OpenSSL
Reference
FSTEC: BDU:2020-00300
FSTEC: BDU:2020-00300
Id:
BDU:2020-00300
Reference:
https://bdu.fstec.ru/vul/2020-00300
CVE: CVE-2019-1551
CVE: CVE-2019-1551
Id:
CVE-2019-1551
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1551
Comment
: 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).
CVSSv2 Score:
5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
PARTIAL
Integrity impact:
NONE
Availability impact:
NONE
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSSv3 Score:
5.3
Attack vector:
NETWORK
Attack complexity:
LOW
Privileges required:
NONE
User interaction:
NONE
Scope:
UNCHANGED
Confidentiality impact:
LOW
Integrity impact:
NONE
Availability impact:
NONE
CVSSv3 Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CWE:
190 (Integer Overflow or Wraparound)
References:
https://www.openssl.org/news/secadv/20191206.txt (CONFIRM)
https://security.netapp.com/advisory/ntap-20191210-0001/ (CONFIRM)
20191225 [slackware-security] openssl (SSA:2019-354-01) (BUGTRAQ)
http://packetstormsecurity.com/files/155754/Slackware-Security-Advisory-openssl-Updates.html (MISC)
DSA-4594 (DEBIAN)
20191229 [SECURITY] [DSA 4594-1] openssl1.0 security update (BUGTRAQ)
https://www.tenable.com/security/tns-2019-09 (CONFIRM)
openSUSE-SU-2020:0062 (SUSE)
GLSA-202004-10 (GENTOO)
https://www.tenable.com/security/tns-2020-03 (CONFIRM)
USN-4376-1 (UBUNTU)
https://www.oracle.com/security-alerts/cpujul2020.html (MISC)
USN-4504-1 (UBUNTU)
https://www.tenable.com/security/tns-2020-11 (CONFIRM)
https://www.oracle.com/security-alerts/cpujan2021.html (MISC)
DSA-4855 (DEBIAN)
https://www.tenable.com/security/tns-2021-10 (CONFIRM)
https://www.oracle.com/security-alerts/cpuApr2021.html (MISC)
[debian-lts-announce] 20220317 [SECURITY] [DLA 2952-1] openssl security update (MLIST)
FEDORA-2020-fcc91a28e8 ()
FEDORA-2020-da2d1ef2d7 ()
FEDORA-2020-d7b29838f6 ()
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=419102400a2811582a7a3d4a4e317d72e5ce0a8f ()
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=f1c5eea8a817075d31e43f5876993c6710238c98 ()
FreeBSD: d778ddb0-2338-11ea-a1c7-b499baebfeaf
FreeBSD: d778ddb0-2338-11ea-a1c7-b499baebfeaf
Id:
d778ddb0-2338-11ea-a1c7-b499baebfeaf
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