Vulnerability Details : CVE-2019-12527

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.
Published 2019-07-11 19:15:13
Updated 2023-02-28 20:49:21
Source MITRE
View at NVD,   CVE.org
Vulnerability category: OverflowMemory Corruption

Products affected by CVE-2019-12527

Threat overview for CVE-2019-12527

Top countries where our scanners detected CVE-2019-12527
Top open port discovered on systems with this issue 3128
IPs affected by CVE-2019-12527 609,907
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2019-12527!
*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2019-12527

EPSS FAQ
2.33%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 90 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-12527

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.8
 MEDIUM AV:N/AC:M/Au:N/C:P/I:P/A:P
8.6
6.4
 NIST
8.8
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
2.8
5.9
 NIST

CWE ids for CVE-2019-12527

  • The product writes data past the end, or before the beginning, of the intended buffer.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2019-12527

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