7.1

CVE-2023-52628

netfilter: nftables: exthdr: fix 4-byte stack OOB write

In the Linux kernel, the following vulnerability has been resolved:

netfilter: nftables: exthdr: fix 4-byte stack OOB write

If priv->len is a multiple of 4, then dst[len / 4] can write past
the destination array which leads to stack corruption.

This construct is necessary to clean the remainder of the register
in case ->len is NOT a multiple of the register size, so make it
conditional just like nft_payload.c does.

The bug was added in 4.1 cycle and then copied/inherited when
tcp/sctp and ip option support was added.

Bug reported by Zero Day Initiative project (ZDI-CAN-21950,
ZDI-CAN-21951, ZDI-CAN-21961).
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 4.1 < 5.10.198
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.132
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.54
Linux ≫ Linux Kernel Version >= 6.2 < 6.5.4
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.68% 0.473
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.1 1.8 5.2
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
CWE-787 Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
https://git.kernel.org/stable/c/1ad7b189cc1411048434e8595ffcbe7873b71082
Patch
https://git.kernel.org/stable/c/28a97c43c9e32f437ebb8d6126f9bb7f3ca9521a
Patch
https://git.kernel.org/stable/c/a7d86a77c33ba1c357a7504341172cc1507f0698
Patch
https://git.kernel.org/stable/c/c8f292322ff16b9a2272a67de396c09a50e09dce
Patch
https://git.kernel.org/stable/c/cf39c4f77a773a547ac2bcf30ecdd303bb0c80cb
Patch
https://git.kernel.org/stable/c/d9ebfc0f21377690837ebbd119e679243e0099cc
Patch
https://git.kernel.org/stable/c/fd94d9dadee58e09b49075240fe83423eb1dcd36
Patch