Amazon Linux 2023 Security Advisory: ALAS-2024-739
Advisory Release Date: 2024-10-10 03:02 Pacific
Advisory Updated Date: 2024-10-14 16:00 Pacific
Severity:
Medium
Issue Overview:
eventlet before 0.35.2, as used in dnspython before 2.6.0, allows remote attackers to interfere with DNS name resolution by quickly sending an invalid packet from the expected IP address and source port, aka a "TuDoor" attack. In other words, dnspython does not have the preferred behavior in which the DNS name resolution algorithm would proceed, within the full time window, in order to wait for a valid packet. NOTE: dnspython 2.6.0 is unusable for a different reason that was addressed in 2.6.1. (CVE-2023-29483)
Affected Packages:
python-dns
Issue Correction:
Run dnf update python-dns --releasever 2023.6.20241010 to update your system.
New Packages:
noarch:
python3-dns+idna-2.1.0-3.amzn2023.0.4.noarch
python3-dns+dnssec-2.1.0-3.amzn2023.0.4.noarch
python3-dns-2.1.0-3.amzn2023.0.4.noarch
src:
python-dns-2.1.0-3.amzn2023.0.4.src