{"id":"UBUNTU-CVE-2019-3557","details":"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).","modified":"2026-04-22T11:57:25.005884Z","published":"2019-01-15T22:29:00Z","upstream":["CVE-2019-3557"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2019-3557"},{"type":"REPORT","url":"https://github.com/facebook/hhvm/commit/6e4dd9ec3f14b48170fc45dc9d13a3261765f994"},{"type":"REPORT","url":"https://hhvm.com/blog/2019/01/14/hhvm-3.30.2.html"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2019-3557"}],"affected":[{"package":{"name":"hhvm","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/hhvm@3.11.1+dfsg-1ubuntu1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.11.0+dfsg-1","3.11.1+dfsg-1","3.11.1+dfsg-1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"3.11.1+dfsg-1ubuntu1","binary_name":"hhvm"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-3557.json"}},{"package":{"name":"hhvm","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/hhvm@3.21.0+dfsg-2ubuntu2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.21.0+dfsg-2","3.21.0+dfsg-2build1","3.21.0+dfsg-2build2","3.21.0+dfsg-2build3","3.21.0+dfsg-2ubuntu2"],"ecosystem_specific":{"binaries":[{"binary_version":"3.21.0+dfsg-2ubuntu2","binary_name":"hhvm"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-3557.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}