CVE-2016-0739
Vulnerability from cvelistv5
Published
2016-04-13 17:00
Modified
2024-08-05 22:30
Severity ?
EPSS score ?
2.15%
(0.82788)
Summary
libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."
References
{ containers: { adp: [ { providerMetadata: { dateUpdated: "2024-08-05T22:30:04.158Z", orgId: "af854a3a-2127-422b-91ae-364da2661108", shortName: "CVE", }, references: [ { name: "FEDORA-2016-d9f950c779", tags: [ "vendor-advisory", "x_refsource_FEDORA", "x_transferred", ], url: "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html", }, { name: "USN-2912-1", tags: [ "vendor-advisory", "x_refsource_UBUNTU", "x_transferred", ], url: "http://www.ubuntu.com/usn/USN-2912-1", }, { tags: [ "x_refsource_CONFIRM", "x_transferred", ], url: "https://www.libssh.org/security/advisories/CVE-2016-0739.txt", }, { tags: [ "x_refsource_CONFIRM", "x_transferred", ], url: "https://puppet.com/security/cve/CVE-2016-0739", }, { name: "FEDORA-2016-dc9e8da03c", tags: [ "vendor-advisory", "x_refsource_FEDORA", "x_transferred", ], url: "http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html", }, { name: "GLSA-201606-12", tags: [ "vendor-advisory", "x_refsource_GENTOO", "x_transferred", ], url: "https://security.gentoo.org/glsa/201606-12", }, { name: "DSA-3488", tags: [ "vendor-advisory", "x_refsource_DEBIAN", "x_transferred", ], url: "http://www.debian.org/security/2016/dsa-3488", }, { name: "RHSA-2016:0566", tags: [ "vendor-advisory", "x_refsource_REDHAT", "x_transferred", ], url: "http://rhn.redhat.com/errata/RHSA-2016-0566.html", }, { tags: [ "x_refsource_CONFIRM", "x_transferred", ], url: "https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/", }, { name: "openSUSE-SU-2016:0880", tags: [ "vendor-advisory", "x_refsource_SUSE", "x_transferred", ], url: "http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html", }, ], title: "CVE Program Container", }, ], cna: { affected: [ { product: "n/a", vendor: "n/a", versions: [ { status: "affected", version: "n/a", }, ], }, ], datePublic: "2016-02-23T00:00:00", descriptions: [ { lang: "en", value: "libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a \"bits/bytes confusion bug.\"", }, ], problemTypes: [ { descriptions: [ { description: "n/a", lang: "en", type: "text", }, ], }, ], providerMetadata: { dateUpdated: "2017-12-08T10:57:01", orgId: "53f830b8-0a3f-465b-8143-3b8a9948e749", shortName: "redhat", }, references: [ { name: "FEDORA-2016-d9f950c779", tags: [ "vendor-advisory", "x_refsource_FEDORA", ], url: "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html", }, { name: "USN-2912-1", tags: [ "vendor-advisory", "x_refsource_UBUNTU", ], url: "http://www.ubuntu.com/usn/USN-2912-1", }, { tags: [ "x_refsource_CONFIRM", ], url: "https://www.libssh.org/security/advisories/CVE-2016-0739.txt", }, { tags: [ "x_refsource_CONFIRM", ], url: "https://puppet.com/security/cve/CVE-2016-0739", }, { name: "FEDORA-2016-dc9e8da03c", tags: [ "vendor-advisory", "x_refsource_FEDORA", ], url: "http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html", }, { name: "GLSA-201606-12", tags: [ "vendor-advisory", "x_refsource_GENTOO", ], url: "https://security.gentoo.org/glsa/201606-12", }, { name: "DSA-3488", tags: [ "vendor-advisory", "x_refsource_DEBIAN", ], url: "http://www.debian.org/security/2016/dsa-3488", }, { name: "RHSA-2016:0566", tags: [ "vendor-advisory", "x_refsource_REDHAT", ], url: "http://rhn.redhat.com/errata/RHSA-2016-0566.html", }, { tags: [ "x_refsource_CONFIRM", ], url: "https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/", }, { name: "openSUSE-SU-2016:0880", tags: [ "vendor-advisory", "x_refsource_SUSE", ], url: "http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html", }, ], x_legacyV4Record: { CVE_data_meta: { ASSIGNER: "secalert@redhat.com", ID: "CVE-2016-0739", STATE: "PUBLIC", }, affects: { vendor: { vendor_data: [ { product: { product_data: [ { product_name: "n/a", version: { version_data: [ { version_value: "n/a", }, ], }, }, ], }, vendor_name: "n/a", }, ], }, }, data_format: "MITRE", data_type: "CVE", data_version: "4.0", description: { description_data: [ { lang: "eng", value: "libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a \"bits/bytes confusion bug.\"", }, ], }, problemtype: { problemtype_data: [ { description: [ { lang: "eng", value: "n/a", }, ], }, ], }, references: { reference_data: [ { name: "FEDORA-2016-d9f950c779", refsource: "FEDORA", url: "http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html", }, { name: "USN-2912-1", refsource: "UBUNTU", url: "http://www.ubuntu.com/usn/USN-2912-1", }, { name: "https://www.libssh.org/security/advisories/CVE-2016-0739.txt", refsource: "CONFIRM", url: "https://www.libssh.org/security/advisories/CVE-2016-0739.txt", }, { name: "https://puppet.com/security/cve/CVE-2016-0739", refsource: "CONFIRM", url: "https://puppet.com/security/cve/CVE-2016-0739", }, { name: "FEDORA-2016-dc9e8da03c", refsource: "FEDORA", url: "http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html", }, { name: "GLSA-201606-12", refsource: "GENTOO", url: "https://security.gentoo.org/glsa/201606-12", }, { name: "DSA-3488", refsource: "DEBIAN", url: "http://www.debian.org/security/2016/dsa-3488", }, { name: "RHSA-2016:0566", refsource: "REDHAT", url: "http://rhn.redhat.com/errata/RHSA-2016-0566.html", }, { name: "https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/", refsource: "CONFIRM", url: "https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/", }, { name: "openSUSE-SU-2016:0880", refsource: "SUSE", url: "http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html", }, ], }, }, }, }, cveMetadata: { assignerOrgId: "53f830b8-0a3f-465b-8143-3b8a9948e749", assignerShortName: "redhat", cveId: "CVE-2016-0739", datePublished: "2016-04-13T17:00:00", dateReserved: "2015-12-16T00:00:00", dateUpdated: "2024-08-05T22:30:04.158Z", state: "PUBLISHED", }, dataType: "CVE_RECORD", dataVersion: "5.1", "vulnerability-lookup:meta": { nvd: "{\"cve\":{\"id\":\"CVE-2016-0739\",\"sourceIdentifier\":\"secalert@redhat.com\",\"published\":\"2016-04-13T17:59:08.413\",\"lastModified\":\"2024-11-21T02:42:17.247\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions 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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.