// For flags

CVE-2017-9788

httpd: Uninitialized memory reflection in mod_auth_digest

Severity Score

9.1
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In Apache httpd before 2.2.34 and 2.4.x before 2.4.27, the value placeholder in [Proxy-]Authorization headers of type 'Digest' was not initialized or reset before or between successive key=value assignments by mod_auth_digest. Providing an initial key with no '=' assignment could reflect the stale value of uninitialized pool memory used by the prior request, leading to leakage of potentially confidential information, and a segfault in other cases resulting in denial of service.

En Apache httpd, en versiones anteriores a la 2.2.34 y en versiones 2.4.x anteriores a la 2.4.27, el valor placeholder en cabeceras [Proxy-]Authorization del tipo 'Digest' no se inicializó o reinició antes de o entre las asignaciones sucesivas key=value por mod_auth_digest. Proporcionar una clave inicial sin asignación "=" podría reflejar el valor obsoleto de la memoria agrupada no inicializada utilizada por la petición anterior. Esto podría dar lugar al filtrado de información potencialmente confidencial y, en otros casos, a un fallo de segmentación que daría como resultado una denegación de servicio (DoS)

It was discovered that the httpd's mod_auth_digest module did not properly initialize memory before using it when processing certain headers related to digest authentication. A remote attacker could possibly use this flaw to disclose potentially sensitive information or cause httpd child process to crash by sending specially crafted requests to a server.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2017-06-21 CVE Reserved
  • 2017-07-13 CVE Published
  • 2024-02-08 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-456: Missing Initialization of a Variable
CAPEC
References (48)
URL Tag Source
http://www.securityfocus.com/bid/99569 Third Party Advisory
http://www.securitytracker.com/id/1038906 Third Party Advisory
https://lists.apache.org/thread.html/0dd69204a6bd643cc4e9ccd008f07a9375525d977c6ebeb07a881afb%40%3Cannounce.httpd.apache.org%3E Mailing List
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/8d63cb8e9100f28a99429b4328e4e7cebce861d5772ac9863ba2ae6f%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/f7f95ac1cd9895db2714fa3ebaa0b94d0c6df360f742a40951384a53%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/r476d175be0aaf4a17680ef98c5153b4d336eaef76fb2224cc94c463a%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r57608dc51b79102f3952ae06f54d5277b649c86d6533dcd6a7d201f7%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/r75cbe9ea3e2114e4271bbeca7aff96117b50c1b6eb7c4772b0337c1f%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r8c9983f1172a3415f915ddb7e14de632d2d0c326eb1285755a024165%40%3Ccvs.httpd.apache.org%3E Mailing List
https://lists.apache.org/thread.html/r9ea3538f229874c80a10af473856a81fbf5f694cd7f471cc679ba70b%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/rad01d817195e6cc871cb1d73b207ca326379a20a6e7f30febaf56d24%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/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%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/rdca61ae990660bacb682295f2a09d34612b7bb5f457577fe17f4d064%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/rfbaf647d52c1cb843e726a0933f156366a806cead84fbd430951591b%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-20170911-0002 Third Party Advisory
https://support.apple.com/HT208221 Third Party Advisory
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03908en_us Third Party Advisory
https://www.tenable.com/security/tns-2019-09 X_refsource_confirm
URL Date SRC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Redhat
Search vendor "Redhat"
Jboss Core Services
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1.0
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-
Affected
in Redhat
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Enterprise Linux
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6.0
Search vendor "Redhat" for product "Enterprise Linux" and version "6.0"
-
Safe
Redhat
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Jboss Core Services
Search vendor "Redhat" for product "Jboss Core Services"
1.0
Search vendor "Redhat" for product "Jboss Core Services" and version "1.0"
-
Affected
in Redhat
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Enterprise Linux
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7.0
Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"
-
Safe
Redhat
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Jboss Enterprise Application Platform
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6.0.0
Search vendor "Redhat" for product "Jboss Enterprise Application Platform" and version "6.0.0"
-
Affected
in Redhat
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Enterprise Linux
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6.0
Search vendor "Redhat" for product "Enterprise Linux" and version "6.0"
-
Safe
Redhat
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Jboss Enterprise Application Platform
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6.0.0
Search vendor "Redhat" for product "Jboss Enterprise Application Platform" and version "6.0.0"
-
Affected
in Redhat
Search vendor "Redhat"
Enterprise Linux
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7.0
Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"
-
Safe
Redhat
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Jboss Enterprise Application Platform
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6.4.0
Search vendor "Redhat" for product "Jboss Enterprise Application Platform" and version "6.4.0"
-
Affected
in Redhat
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Enterprise Linux
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6.0
Search vendor "Redhat" for product "Enterprise Linux" and version "6.0"
-
Safe
Redhat
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Jboss Enterprise Application Platform
Search vendor "Redhat" for product "Jboss Enterprise Application Platform"
6.4.0
Search vendor "Redhat" for product "Jboss Enterprise Application Platform" and version "6.4.0"
-
Affected
in Redhat
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Enterprise Linux
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7.0
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-
Safe
Redhat
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Jboss Enterprise Web Server
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2.0.0
Search vendor "Redhat" for product "Jboss Enterprise Web Server" and version "2.0.0"
-
Affected
in Redhat
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Enterprise Linux
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6.0
Search vendor "Redhat" for product "Enterprise Linux" and version "6.0"
-
Safe
Redhat
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Jboss Enterprise Web Server
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2.0.0
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-
Affected
in Redhat
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Enterprise Linux
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7.0
Search vendor "Redhat" for product "Enterprise Linux" and version "7.0"
-
Safe
Apache
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Http Server
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<= 2.2.33
Search vendor "Apache" for product "Http Server" and version " <= 2.2.33"
-
Affected
Apache
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Http Server
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>= 2.4.0 <= 2.4.26
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-
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
Apple
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Mac Os X
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< 10.13.1
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-
Affected
Netapp
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Oncommand Unified Manager
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-7-mode
Affected
Netapp
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Storage Automation Store
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--
Affected
Redhat
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Enterprise Linux Desktop
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6.0
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-
Affected
Redhat
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Enterprise Linux Desktop
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7.0
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-
Affected
Redhat
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Enterprise Linux Server
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6.0
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-
Affected
Redhat
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Enterprise Linux Server
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7.0
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-
Affected
Redhat
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Enterprise Linux Server Aus
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7.2
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-
Affected
Redhat
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Enterprise Linux Server Aus
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7.3
Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.3"
-
Affected
Redhat
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Enterprise Linux Server Aus
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7.4
Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.4"
-
Affected
Redhat
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Enterprise Linux Server Aus
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7.6
Search vendor "Redhat" for product "Enterprise Linux Server Aus" and version "7.6"
-
Affected
Redhat
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Enterprise Linux Server Eus
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6.7
Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "6.7"
-
Affected
Redhat
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Enterprise Linux Server Eus
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7.2
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-
Affected
Redhat
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Enterprise Linux Server Eus
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7.3
Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.3"
-
Affected
Redhat
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Enterprise Linux Server Eus
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7.4
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-
Affected
Redhat
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Enterprise Linux Server Eus
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7.5
Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.5"
-
Affected
Redhat
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Enterprise Linux Server Eus
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7.6
Search vendor "Redhat" for product "Enterprise Linux Server Eus" and version "7.6"
-
Affected
Redhat
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Enterprise Linux Server Tus
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7.2
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-
Affected
Redhat
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Enterprise Linux Server Tus
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7.3
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-
Affected
Redhat
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Enterprise Linux Server Tus
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7.4
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-
Affected
Redhat
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Enterprise Linux Server Tus
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7.6
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Affected
Redhat
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Enterprise Linux Workstation
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6.0
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-
Affected
Redhat
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Enterprise Linux Workstation
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7.0
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-
Affected
Oracle
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Secure Global Desktop
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5.3
Search vendor "Oracle" for product "Secure Global Desktop" and version "5.3"
-
Affected