Vulnerabilities > CVE-2024-49997 - Improper Cross-boundary Removal of Sensitive Data vulnerability in Linux Kernel
Summary
In the Linux kernel, the following vulnerability has been resolved: net: ethernet: lantiq_etop: fix memory disclosure When applying padding, the buffer is not zeroed, which results in memory disclosure. The mentioned data is observed on the wire. This patch uses skb_put_padto() to pad Ethernet frames properly. The mentioned function zeroes the expanded buffer. In case the packet cannot be padded it is silently dropped. Statistics are also not incremented. This driver does not support statistics in the old 32-bit format or the new 64-bit format. These will be added in the future. In its current form, the patch should be easily backported to stable versions. Ethernet MACs on Amazon-SE and Danube cannot do padding of the packets in hardware, so software padding must be applied.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Windows ::DATA Alternate Data Stream An attacker exploits the functionality of Microsoft NTFS Alternate Data Streams (ADS) to undermine system security. ADS allows multiple "files" to be stored in one directory entry referenced as filename:streamname. One or more alternate data streams may be stored in any file or directory. Normal Microsoft utilities do not show the presence of an ADS stream attached to a file. The additional space for the ADS is not recorded in the displayed file size. The additional space for ADS is accounted for in the used space on the volume. An ADS can be any type of file. ADS are copied by standard Microsoft utilities between NTFS volumes. ADS can be used by an attacker or intruder to hide tools, scripts, and data from detection by normal system utilities. Many anti-virus programs do not check for or scan ADS. Windows Vista does have a switch (-R) on the command line DIR command that will display alternate streams.
References
- https://git.kernel.org/stable/c/185df159843d30fb71f821e7ea4368c2a3bfcd36
- https://git.kernel.org/stable/c/469856f76f4802c5d7e3d20e343185188de1e2db
- https://git.kernel.org/stable/c/2bf4c101d7c99483b8b15a0c8f881e3f399f7e18
- https://git.kernel.org/stable/c/e66e38d07b31e177ca430758ed97fbc79f27d966
- https://git.kernel.org/stable/c/1097bf16501ed5e35358d848b0a94ad2830b0f65
- https://git.kernel.org/stable/c/431b122933b197820d319eb3987a67d04346ce9e
- https://git.kernel.org/stable/c/45c0de18ff2dc9af01236380404bbd6a46502c69