[CLSA-2026:1786554413] Fix of 7 CVEs
Type:
security
Severity:
Important
Release date:
2026-08-12 17:07:12 UTC
Description:
* SECURITY UPDATE: tarfile.data_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory, so tarfile.extractall() could write files outside the destination directory. - debian/patches/CVE-2026-7774.patch: backport of cpython c063191c ([3.10] branch variant of 57841198, gh-149486). data_filter now validates the normalised link target that is actually written to disk, resolves a symlink's target relative to its member name with trailing separators stripped, and rejects link members that would replace the destination directory itself. - CVE-2026-7774 * SECURITY UPDATE: ftplib.ftpcp() still called parse227() directly and passed the source server's self-reported PASV IPv4 address to the target server's PORT command, so a malicious source FTP server could redirect the target's data connection to an arbitrary host:port (SSRF); the CVE-2021-4189 fix only covered FTP.makepasv(). - debian/patches/CVE-2026-8328.patch: backport of cpython eac4fe3b (gh-87451). ftpcp() now uses the source server's actual peer address unless trust_server_pasv_ipv4_address is set, the same rule FTP.makepasv() already applies. - CVE-2026-8328
Updated packages:
  • alt-python36_3.6.15-43_amd64.deb
    sha:4edf65721cc534ec96db0d21e986a8b3850e420b
  • alt-python36-debug_3.6.15-43_amd64.deb
    sha:a86e99134ccd04ae422a12c4638ea66d6575fd9f
  • alt-python36-devel_3.6.15-43_amd64.deb
    sha:949f07825b043cb5c77c14399ecb39eacd4570fe
  • alt-python36-libs_3.6.15-43_amd64.deb
    sha:9244a8118f26c9bbda73691a058eeccfaf494fe3
  • alt-python36-test_3.6.15-43_amd64.deb
    sha:5e5f138c915193dc2dafd7032b1d02e0e51d223e
  • alt-python36-tkinter_3.6.15-43_amd64.deb
    sha:04538caa88eda7a956d255f597061e1bc0c20de4
  • alt-python36-tools_3.6.15-43_amd64.deb
    sha:11ea441aaf1aa2a9b45e34c97ab58d65e00efeab
Notes:
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