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| Rule General Information |
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| Release Date: | 2021-11-17 | |
| Rule Name: | Apache httpd mod_auth_digest Memory Access Denial of Service Vulnerability (CVE-2017-9788) | |
| Severity: | ||
| CVE ID: | ||
| Rule Protection Details |
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| Description: | 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. | |
| Impact: | An attacker can launch a denial of service attack by exploiting the vulnerability successfully. | |
| Affected OS: | Windows, Linux, Others | |
| Reference: | SecurityFocusBID:99569 http://www.debian.org/security/2017/dsa-3913 http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html SecurityTrackerID:1038906 |
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| Solutions |
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| The vendor has released upgrade patches to fix vulnerabilities, please visit: https://httpd.apache.org/security/vulnerabilities_24.html |