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ubuntucveUbuntu.comUB:CVE-2018-0734
HistoryOct 30, 2018 - 12:00 a.m.

CVE-2018-0734

2018-10-3000:00:00
ubuntu.com
ubuntu.com
21

5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

0.003 Low

EPSS

Percentile

69.0%

JSON

The OpenSSL DSA signature algorithm has been shown to be vulnerable to a
timing side channel attack. An attacker could use variations in the signing
algorithm to recover the private key. Fixed in OpenSSL 1.1.1a (Affected
1.1.1). Fixed in OpenSSL 1.1.0j (Affected 1.1.0-1.1.0i). Fixed in OpenSSL
1.0.2q (Affected 1.0.2-1.0.2p).

Notes

Author Note
mdeslaur there are other similar commits in crypto/dsa/dsa_ossl.c that likely need backporting also. upstream advisory was ammended with more commits
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchopenssl< 1.1.0g-2ubuntu4.3UNKNOWN
ubuntu18.10noarchopenssl< 1.1.1-1ubuntu2.1UNKNOWN
ubuntu19.04noarchopenssl< 1.1.1a-1ubuntu2UNKNOWN
ubuntu19.10noarchopenssl< 1.1.1a-1ubuntu2UNKNOWN
ubuntu20.04noarchopenssl< 1.1.1a-1ubuntu2UNKNOWN
ubuntu20.10noarchopenssl< 1.1.1a-1ubuntu2UNKNOWN
ubuntu21.04noarchopenssl< 1.1.1a-1ubuntu2UNKNOWN
ubuntu14.04noarchopenssl< 1.0.1f-1ubuntu2.27UNKNOWN
ubuntu16.04noarchopenssl< 1.0.2g-1ubuntu4.14UNKNOWN
ubuntu18.04noarchopenssl1.0< 1.0.2n-1ubuntu5.2UNKNOWN
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1-10 of 111

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5.9 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

0.003 Low

EPSS

Percentile

69.0%

JSON
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