CVE-2016-8743
It was discovered that the HTTP parser in httpd incorrectly allowed certain characters not permitted by the HTTP protocol specification to appear unencoded in HTTP request headers. If httpd was used in conjunction with a proxy or backend server that interpreted those characters differently, a remote attacker could possibly use this flaw to inject data into HTTP responses, resulting in proxy cache poisoning.
Find out more about CVE-2016-8743 from the MITRE CVE dictionary dictionary and NIST NVD.
CVSS v2 metrics
| Base Score | 4.3 |
|---|---|
| Base Metrics | AV:N/AC:M/Au:N/C:N/I:P/A:N |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | Partial |
| Availability Impact | None |
CVSS v3 metrics
| CVSS3 Base Score | 4 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N |
| Attack Vector | Network |
| Attack Complexity | High |
| Privileges Required | None |
| User Interaction | None |
| Scope | Changed |
| Confidentiality | None |
| Integrity Impact | Low |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
Red Hat Security Errata
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat JBoss Core Services on RHEL 6 Server (jbcs-httpd24-httpd) | RHSA-2017:1414 | 2017-06-07 |
| Red Hat Enterprise Linux 6 (httpd) | RHSA-2017:1721 | 2017-07-11 |
| Red Hat Enterprise Linux 7 (httpd) | RHSA-2017:0906 | 2017-04-12 |
| Red Hat JBoss Core Services 1 | RHSA-2017:1415 | 2017-06-07 |
| Red Hat JBoss Core Services on RHEL 7 Server (jbcs-httpd24-httpd) | RHSA-2017:1413 | 2017-06-07 |
| Red Hat Software Collections for Red Hat Enterprise Linux 7 (httpd24-httpd) | RHSA-2017:1161 | 2017-04-26 |
| Red Hat Software Collections for Red Hat Enterprise Linux 6 (httpd24-httpd) | RHSA-2017:1161 | 2017-04-26 |
Affected Packages State
| Platform | Package | State |
|---|---|---|
| Red Hat JBoss Web Server 3 | httpd24 | Not affected |
| Red Hat JBoss EWS 2 | httpd22 | Will not fix |
| Red Hat JBoss EWS 1 | httpd | Will not fix |
| Red Hat JBoss EAP 6 | httpd22 | Will not fix |
| Red Hat JBoss EAP 5 | httpd | Not affected |
| Red Hat Enterprise Linux 5 | httpd | Will not fix |
| Red Hat Directory Server 8 | httpd | Not affected |