Impact: Moderate Public Date: 2019-07-12 CWE: CWE-122 Bugzilla: 1730533: CVE-2019-12527 squid: heap-based buffer overflow in HttpHeader::getAuth An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn't greater than the buffer, leading to a heap-based buffer overflow with user controlled data.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2019-12527 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v3 metrics and score provided are preliminary and subject to review.
| CVSS3 Base Score | 5.4 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L |
| Attack Vector | Network |
| Attack Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity Impact | None |
| Availability Impact | Low |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 8 | squid | Under investigation |
| Red Hat Enterprise Linux 7 | squid | Under investigation |
| Red Hat Enterprise Linux 6 | squid | Under investigation |
| Red Hat Enterprise Linux 5 | squid | Under investigation |
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