// For flags

CVE-2018-1283

httpd: Improper handling of headers in mod_session can allow a remote user to modify session data for CGI applications

Severity Score

5.3
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In Apache httpd 2.4.0 to 2.4.29, when mod_session is configured to forward its session data to CGI applications (SessionEnv on, not the default), a remote user may influence their content by using a "Session" header. This comes from the "HTTP_SESSION" variable name used by mod_session to forward its data to CGIs, since the prefix "HTTP_" is also used by the Apache HTTP Server to pass HTTP header fields, per CGI specifications.

En Apache httpd, versiones 2.4.0 hasta la 2.4.29, cuando se configura mod_session para que reenvíe sus datos de sesión a aplicaciones CGI (SessionEnv habilitado, no por defecto), un usuario remoto podría influir en su contenido empleando una cabecera "Session". Esto viene del nombre de variable "HTTP_SESSION", empleado por mod_session para reenviar sus datos a interfaces de entrada común (CGI), dado que el prefijo "HTTP_" también es utilizado por el servidor Apache HTTP para pasar sus campos de cabecera HTTP, por especificaciones CGI.

It has been discovered that the mod_session module of Apache HTTP Server (httpd), through version 2.4.29, has an improper input validation flaw in the way it handles HTTP session headers in some configurations. A remote attacker may influence their content by using a "Session" header.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
Single
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2017-12-07 CVE Reserved
  • 2018-03-26 CVE Published
  • 2024-05-18 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
CAPEC
References (28)
URL Tag Source
http://www.openwall.com/lists/oss-security/2018/03/24/4 Mailing List
http://www.securityfocus.com/bid/103520 Third Party Advisory
http://www.securitytracker.com/id/1040568 Third Party Advisory
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/rd336919f655b7ff309385e34a143e41c503e133da80414485b3abcc9%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770%40%3Ccvs.httpd.apache.org%3E Mailing List
https://security.netapp.com/advisory/ntap-20180601-0004 Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03909en_us Third Party Advisory
https://www.tenable.com/security/tns-2019-09 X_refsource_confirm
URL Date SRC
URL Date SRC
URL Date SRC
https://access.redhat.com/errata/RHSA-2018:3558 2023-11-07
https://access.redhat.com/errata/RHSA-2019:0366 2023-11-07
https://access.redhat.com/errata/RHSA-2019:0367 2023-11-07
https://httpd.apache.org/security/vulnerabilities_24.html 2023-11-07
https://usn.ubuntu.com/3627-1 2023-11-07
https://usn.ubuntu.com/3627-2 2023-11-07
https://www.debian.org/security/2018/dsa-4164 2023-11-07
https://access.redhat.com/security/cve/CVE-2018-1283 2020-09-29
https://bugzilla.redhat.com/show_bug.cgi?id=1560395 2020-09-29
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Apache
Search vendor "Apache"
 Http Server
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 >= 2.4.0 <= 2.4.29
Search vendor "Apache" for product "Http Server" and version " >= 2.4.0 <= 2.4.29"
-
Affected
Debian
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 Debian Linux
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 8.0
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-
Affected
Debian
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 Debian Linux
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 9.0
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-
Affected
Canonical
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 Ubuntu Linux
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 14.04
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lts
Affected
Canonical
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 Ubuntu Linux
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 16.04
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lts
Affected
Canonical
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 Ubuntu Linux
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 17.10
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-
Affected
Canonical
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 Ubuntu Linux
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 18.04
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lts
Affected
Netapp
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 Santricity Cloud Connector
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--
Affected
Netapp
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 Storage Automation Store
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--
Affected
Netapp
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 Storagegrid
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Affected
Netapp
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 Clustered Data Ontap
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Affected
Redhat
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 Enterprise Linux
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 6.0
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Affected
Redhat
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 Enterprise Linux
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 7.0
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Affected
Redhat
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 Enterprise Linux
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 7.4
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Affected
Redhat
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 Enterprise Linux
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 7.5
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Affected
Redhat
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 Enterprise Linux
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 7.6
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Affected