SB2017121509 - Red Hat update for Apache
Published: December 15, 2017 Updated: February 2, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 vulnerabilities.
1) Authentication bypass (CVE-ID: CVE-2017-3167)
CWE-ID: CWE-592 - Authentication Bypass Issues
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to usage of the ap_get_basic_auth_pw() function by third-party modules outside of the authentication phase. A remote attacker can create a specially crafted HTTP request to vulnerable web server, bypass authentication requirements and gain unauthorized access to otherwise protected information.
2) NULL pointer dereference (CVE-ID: CVE-2017-3169)
CWE-ID: CWE-592 - Authentication Bypass Issues
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
The vulnerability allows a remote attacker to perform denial of service attack.
The vulnerability exists due to a NULL pointer dereference error within mod_ssl module, when third-party modules call ap_hook_process_connection() function during an HTTP request to an HTTPS port. A remote attacker can send a specially crafted HTTP request and crash the affected web server.
3) Out-of-bounds read (CVE-ID: CVE-2017-7679)
CWE-ID: CWE-125 - Out-of-bounds read
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green
The vulnerability allows a remote attacker to obtain potentially sensitive information.
The vulnerability exists due to out-of-bounds read within the mod_mime when constructing Content-Type response header. A remote attacker read one byte pas the end of a buffer when sending a malicious Content-Type response header.
4) Use-after-free (CVE-ID: CVE-2017-9798)
CWE-ID: CWE-416 - Use After Free
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Clear
The vulnerability allows a remote attacker to obtain potentially sensitive information.
The vulnerability exists due to use-after-free error when processing HTTP OPTIONS requests in server/core.c, when limits are configured in .htaccess or httpd.conf configuration files. A remote unauthenticated attacker can read portions of memory through HTTP OPTIONS requests and gain access to potentially sensitive data.
The vulnerability is dubbed Optionsbleed.
5) Out-of-bounds read (CVE-ID: CVE-2017-12613)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.
The weakness exists due to an out-of-bounds array dereference in the apr_time_exp_get() function. A remote attacker can access prior out-of-bounds memory, reveal the contents of a different static heap value and read arbitrary files or cause the application to crash.
Remediation
Install update from vendor's website.