xbuf_format_converter, used as part of exif_read_data, was appending a terminating null character to the generated string, but was not using its standard append char function. As a result, if the buffer was full, it would result in an out-of-bounds write. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.
                
            Metrics
Affected Vendors & Products
References
        History
                    No history.
 MITRE
                        MITRE
                    Status: PUBLISHED
Assigner: facebook
Published:
Updated: 2024-08-04T06:53:59.921Z
Reserved: 2019-12-02T00:00:00
Link: CVE-2020-1917
 Vulnrichment
                        Vulnrichment
                    No data.
 NVD
                        NVD
                    Status : Modified
Published: 2021-03-10T16:15:14.313
Modified: 2024-11-21T05:11:36.520
Link: CVE-2020-1917
 Redhat
                        Redhat
                    No data.