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ubuntucveUbuntu.comUB:CVE-2017-9798
HistorySep 18, 2017 - 12:00 a.m.

CVE-2017-9798

2017-09-1800:00:00
ubuntu.com
ubuntu.com
30

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.973 High

EPSS

Percentile

99.9%

Apache httpd allows remote attackers to read secret data from process
memory if the Limit directive can be set in a user’s .htaccess file, or if
httpd.conf has certain misconfigurations, aka Optionsbleed. This affects
the Apache HTTP Server through 2.2.34 and 2.4.x through 2.4.27. The
attacker sends an unauthenticated OPTIONS HTTP request when attempting to
read secret data. This is a use-after-free issue and thus secret data is
not always sent, and the specific data depends on many factors including
configuration. Exploitation with .htaccess can be blocked with a patch to
the ap_limit_section function in server/core.c.

Bugs

OSVersionArchitecturePackageVersionFilename
ubuntu12.04noarchapache2< 2.2.22-1ubuntu1.14UNKNOWN
ubuntu14.04noarchapache2< 2.4.7-1ubuntu4.18UNKNOWN
ubuntu16.04noarchapache2< 2.4.18-2ubuntu3.5UNKNOWN
ubuntu17.04noarchapache2< 2.4.25-3ubuntu2.3UNKNOWN
ubuntu17.10noarchapache2< 2.4.27-2ubuntu3UNKNOWN

7.5 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

5 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.973 High

EPSS

Percentile

99.9%