CVE-2019-3557

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).

• CWE-125
• CWE-125

• https://github.com/facebook/hhvm/commit/6e4dd9ec3f14b48170fc45dc9d13a3261765f994Patch, Third Party Advisory
• https://hhvm.com/blog/2019/01/14/hhvm-3.30.2.htmlVendor Advisory
• https://github.com/facebook/hhvm/commit/6e4dd9ec3f14b48170fc45dc9d13a3261765f994Patch, Third Party Advisory
• https://hhvm.com/blog/2019/01/14/hhvm-3.30.2.htmlVendor Advisory

Published

Jan 15, 2019

Last Modified

Jun 17, 2026

Status

Modified

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