Debian Security Advisory
DLA-2708-1 php7.0 -- LTS security update
- Date Reported:
- 15 Jul 2021
- Affected Packages:
- Security database references:
- In the Debian bugtracking system: Bug 942830, Bug 990575.
In Mitre's CVE dictionary: CVE-2019-18218, CVE-2020-7071, CVE-2021-21702, CVE-2021-21704, CVE-2021-21705.
- More information:
Several vulnerabilities were discovered in php5, a server-side, HTML-embedded scripting language. An attacker could cause denial of service (DoS), memory corruption and potentially execution of arbitrary code, and server-side request forgery (SSRF) bypass.
fileinfo: cdf_read_property_info in cdf.c does not restrict the number of CDF_VECTOR elements, which allows a heap-based buffer overflow (4-byte out-of-bounds write).
When validating URL with functions like filter_var($url, FILTER_VALIDATE_URL), PHP will accept an URL with invalid password as valid URL. This may lead to functions that rely on URL being valid to mis-parse the URL and produce wrong data as components of the URL.
When using SOAP extension to connect to a SOAP server, a malicious SOAP server could return malformed XML data as a response that would cause PHP to access a null pointer and thus cause a crash.
Multiple firebird issues.
SSRF bypass in FILTER_VALIDATE_URL.
For Debian 9 stretch, these problems have been fixed in version 7.0.33-0+deb9u11.
We recommend that you upgrade your php7.0 packages.
For the detailed security status of php7.0 please refer to its security tracker page at: https://security-tracker.debian.org/tracker/php7.0
Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS