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kasperskyKaspersky LabKLA12361
HistoryMar 21, 2018 - 12:00 a.m.

KLA12361 Multiple vulnerabilities in Apache HTTP Server

2018-03-2100:00:00
Kaspersky Lab
threats.kaspersky.com
19

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.6 High

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.962 High

EPSS

Percentile

99.5%

Multiple vulnerabilities were found in Apache HTTP Server. Malicious users can exploit these vulnerabilities to cause denial of service, bypass security restrictions, obtain sensitive information.

Below is a complete list of vulnerabilities:

  1. Out of bounds read vulnerability in mod_cache_socache can be exploited to cause denial of service.
  2. Security bypass vulnerability in mod_auth_digest can be exploited to bypass security restrictions.
  3. Use after free vulnerability on HTTP/2 stream shutdown can be exploited to cause denial of service.
  4. Out of bound access vulnerability in HTTP request can be exploited via special crafted request to cause denial of service.
  5. Out of bounds write vulnerability in mod_authnz_ldap can be exploited to cause denial of service.
  6. Security bypass vulnerability in filename can be exploited to bypass security restrictions.
  7. Information disclosure vulnerability in โ€œSessionโ€ header can be exploited remotely to obtain sensitive information.

Original advisories

Fixed in Apache HTTP Server 2.4.33

Exploitation

Public exploits exist for this vulnerability.

Related products

Apache-HTTP-Server

CVE list

CVE-2018-1303 critical

CVE-2018-1312 critical

CVE-2018-1302 high

CVE-2018-1301 high

CVE-2017-15710 critical

CVE-2017-15715 critical

CVE-2018-1283 high

Solution

Update to the latest version

Download Apache HTTP Server

Impacts

  • OSI

Obtain sensitive information. Exploitation of vulnerabilities with this impact can lead to capturing by abuser information, critical for user or system.

  • DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

  • SB

Security bypass. Exploitation of vulnerabilities with this impact can lead to performing actions restricted by current security settings.

Affected Products

  • Apache HTTP Server earlier than 2.4.33

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.6 High

AI Score

Confidence

High

6.8 Medium

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.962 High

EPSS

Percentile

99.5%