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ubuntucveUbuntu.comUB:CVE-2017-18258
HistoryApr 08, 2018 - 12:00 a.m.

CVE-2017-18258

2018-04-0800:00:00
ubuntu.com
ubuntu.com
14

6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.017 Low

EPSS

Percentile

87.7%

JSON

The xz_head function in xzlib.c in libxml2 before 2.9.6 allows remote
attackers to cause a denial of service (memory consumption) via a crafted
LZMA file, because the decoder functionality does not restrict memory usage
to what is required for a legitimate file.

Bugs

Notes

Author Note
leosilva precise/esm hasn’t support for LZMA
ccdm94 the fix for this issue seems to introduce the vulnerability related to CVE-2018-9251.
OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchlibxml2< 2.9.4+dfsg1-6.1ubuntu1.2UNKNOWN
ubuntu14.04noarchlibxml2< 2.9.1+dfsg1-3ubuntu4.13UNKNOWN
ubuntu16.04noarchlibxml2< 2.9.3+dfsg1-1ubuntu0.6UNKNOWN

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6.5 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

4.3 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

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

0.017 Low

EPSS

Percentile

87.7%

JSON
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