CVE-2018-0732

Name
CVE-2018-0732
Description
During key agreement in a TLS handshake using a DH(E) based ciphersuite a malicious server can send a very large prime value to the client. This will cause the client to spend an unreasonably long period of time generating a key for this prime resulting in a hang until the client has finished. This could be exploited in a Denial Of Service attack. Fixed in OpenSSL 1.1.0i-dev (Affected 1.1.0-1.1.0h). Fixed in OpenSSL 1.0.2p-dev (Affected 1.0.2-1.0.2o).
NVD Severity
medium
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
Vendor Advisory https://www.openssl.org/news/secadv/20180612.txt
Patch https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=ea7abeeabf92b7aca160bdd0208636d4da69f4f4
Patch https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=3984ef0b72831da8b3ece4745cac4f8575b19098
Third Party Advisory http://www.securitytracker.com/id/1041090
Third Party Advisory http://www.securityfocus.com/bid/104442
Third Party Advisory https://usn.ubuntu.com/3692-2/
Third Party Advisory https://usn.ubuntu.com/3692-1/
Third Party Advisory https://lists.debian.org/debian-lts-announce/2018/07/msg00043.html
REDHAT https://access.redhat.com/errata/RHSA-2018:2553
REDHAT https://access.redhat.com/errata/RHSA-2018:2552
CONFIRM https://nodejs.org/en/blog/vulnerability/august-2018-security-releases/
CONFIRM https://www.tenable.com/security/tns-2018-12
CONFIRM https://securityadvisories.paloaltonetworks.com/Home/Detail/133
CONFIRM http://www.oracle.com/technetwork/security-advisory/cpuoct2018-4428296.html
CONFIRM https://www.tenable.com/security/tns-2018-14
CONFIRM https://www.tenable.com/security/tns-2018-13
REDHAT https://access.redhat.com/errata/RHSA-2018:3221
CONFIRM https://security.netapp.com/advisory/ntap-20181105-0001/
REDHAT https://access.redhat.com/errata/RHSA-2018:3505
GENTOO https://security.gentoo.org/glsa/201811-03
DEBIAN https://www.debian.org/security/2018/dsa-4348
DEBIAN https://www.debian.org/security/2018/dsa-4355
CONFIRM https://www.tenable.com/security/tns-2018-17
CONFIRM https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html
CONFIRM https://security.netapp.com/advisory/ntap-20190118-0002/
MISC https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html
REDHAT https://access.redhat.com/errata/RHSA-2019:1297
REDHAT https://access.redhat.com/errata/RHSA-2019:1296
REDHAT https://access.redhat.com/errata/RHSA-2019:1543
MISC https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EWC42UXL5GHTU5G77VKBF6JYUUNGSHOM/
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZBEV5QGDRFUZDMNECFXUSN5FMYOZDE4V/
FEDORA https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/Y3IVFGSERAZLNJCK35TEM2R4726XIH3Z/
MISC https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
N/A https://www.oracle.com/security-alerts/cpuapr2020.html
MISC https://www.oracle.com/security-alerts/cpujan2021.html
CONFIRM https://cert-portal.siemens.com/productcert/pdf/ssa-419820.pdf

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* openssl >= 1.1.0 <= 1.1.0h
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:* openssl >= 1.0.2 <= 1.0.2o

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
libressl edge-community 2.7.4-r0 None fixed
libressl 3.22-community 2.7.4-r0 None fixed
libressl 3.21-community 2.7.4-r0 None fixed
libressl 3.20-community 2.7.4-r0 None fixed
libressl 3.19-community 2.7.4-r0 None fixed
libressl 3.18-community 2.7.4-r0 None fixed
libressl 3.17-community 2.7.4-r0 None fixed
libressl 3.12-main 2.7.4-r0 None fixed
libressl 3.11-main 2.7.4-r0 None fixed
libressl 3.10-main 2.7.4-r0 None fixed