CVE-2020-7060

Cuando se usan determinadas funciones de mbstring para convertir codificaciones multibyte, en PHP versiones 7.2.x por debajo de 7.2.27, versiones 7.3.x por debajo de 7.3.14 y versiones 7.4.x por debajo de 7.4.2, es posible suministrar datos que causarán que la función mbfl_filt_conv_big5_wchar lea más allá del buffer asignado. Esto puede conllevar a una divulgación de información o bloqueo.

USN-4279-1 fixed vulnerabilities in PHP. The updated packages caused a regression. This update fixes the problem. It was discovered that PHP incorrectly handled certain scripts. An attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 12.04 ESM, Ubuntu 14.04 ESM and Ubuntu 16.04 LTS. It was discovered that PHP incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information. It was discovered that PHP incorrectly handled certain inputs. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 14.04 ESM, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 19.10. Various other issues were also addressed.