CVE-2019-12519 Details
An issue was discovered in Squid through 4.7. When handling the tag esi:when when ESI is enabled, Squid calls ESIExpression::Evaluate. This function uses a fixed stack buffer to hold the expression while it's being evaluated. When processing the expression, it could either evaluate the top of the stack, or add a new member to the stack. When adding a new member, there is no check to ensure that the stack won't overflow.
View at NVD
Exploit prediction scoring system (EPSS) score for CVE-2019-12519
EPSS (Exploit Prediction Scoring System): EPSS predicts the likelihood that a vulnerability will be exploited in the wild. A higher percentage means a greater chance of an exploit occurring. The EPSS model produces a probability score between 0 and 1 (0 and 100%).
4.38 Probability of exploitation activity being observed over the next 30 days (89th percentile)
CVSS score for CVE-2019-12519
CVSS (Common Vulnerability Scoring System): An open framework owned and managed by FIRST.Org, Inc. that assigns a numerical score from 0 to 10 to software vulnerabilities to indicate their severity.
9.8 Critical
Products affected by CVE-2019-12519
Squid 3.1.14
Squid 3.1.15
Squid 3.1.16
Squid 3.1.18
Squid 3.1.19
DVE Score by Bitsight AI
DVE scores complement traditional static scoring systems like CVSS with Bitsight AI powered real-time threat intelligence and underground cyber criminal activity so that security teams can reduce alert fatigue and focus on vulnerabilities most likely to be exploited.
Low
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CVE-2019-12519 Global Footprint

Top 10 Identified Countries

Country Observations Percentage
US 1,262,722 74.15%
CA 145,150 8.52%
GB 76,936 4.52%
BR 60,932 3.58%
RO 49,468 2.90%
CN 17,961 1.05%
IN 13,125 0.77%
DE 12,154 0.71%
JP 9,429 0.55%
CH 8,317 0.49%

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CVE-2019-12519 Industry Footprint

Top 10 Identified Industries

*Service provider organizations (typically Technology and Telecommunications) are disproportionally represented in the results given their upstream ownership of end-user infrastructure. See our FAQs.

Industry* Observations Percentage
Technology 299,237 90.72%
Telecommunications 29,434 8.92%
Education 423 0.13%
Media/Entertainment 219 0.07%
Government/Politics 127 0.04%
Business Services 74 0.02%
Finance 71 0.02%
Retail 54 0.02%
Consumer Goods 37 0.01%
Utilities 35 0.01%

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