Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2023-3341: The code that processes control channel messages sent to `named` calls certain functions recursively during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on the environment, this may cause the packet-parsing code to run out of available stack memory, causing `named` to terminate unexpectedly. Since each incoming control channel message is fully parsed before its contents are authenticated, exploiting this flaw does not require the attacker to hold a valid RNDC key; only network access to the control channel's configured TCP port is necessary. This issue affects BIND 9 versions 9.2.0 through 9.16.43, 9.18.0 through 9.18.18, 9.19.0 through 9.19.16, 9.9.3-S1 through 9.16.43-S1, and 9.18.0-S1 through 9.18.18-S1.
Fixed packages 17
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | bind | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-chroot | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-debuginfo | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-devel | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-export-devel | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-export-libs | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-libs | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-libs-lite | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-license | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-lite-devel | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-pkcs11 | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-pkcs11-devel | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-pkcs11-libs | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-pkcs11-utils | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-sdb | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-sdb-chroot | 32:9.11.4-26.P2.amzn2.13.5 |
| Amazon Linux · 2 | bind-utils | 32:9.11.4-26.P2.amzn2.13.5 |
Vulnerabilities 1
-
High 7.5
A stack exhaustion flaw in control channel code may cause named to terminate unexpectedly
The code that processes control channel messages sent to `named` calls certain functions recursively during packet parsing. Recursion depth is only limited by the maximum accepted packet size; depending on the environment, this may cause the packet-parsing co…
References
-
web
https://alas.aws.amazon.com/cve/html/CVE-2023-3341.html