The implementations of streams for bz2 and php://output improperly implemented their readImpl functions, returning -1 consistently. This behavior caused some stream functions, such as stream_get_line, to trigger an out-of-bounds read when operating on such malformed streams. The implementations were updated to return valid values consistently. This affects all supported versions of HHVM (3.30 and 3.27.4 and below).
Published 2019-01-15 22:29:00
Updated 2019-10-09 23:49:15
View at NVD,   CVE.org

Threat overview for CVE-2019-3557

Top countries where our scanners detected CVE-2019-3557
Top open port discovered on systems with this issue 80
IPs affected by CVE-2019-3557 142
Threat actors abusing to this issue? Yes
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Exploit prediction scoring system (EPSS) score for CVE-2019-3557

0.24%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 61 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2019-3557

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
NIST
9.8
CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
NIST

CWE ids for CVE-2019-3557

  • The product reads data past the end, or before the beginning, of the intended buffer.
    Assigned by:
    • cve-assign@fb.com (Secondary)
    • nvd@nist.gov (Primary)

References for CVE-2019-3557

Products affected by CVE-2019-3557

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