[월:] 2023년 06월

CVE-2023-3439

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CVE-2023-3439

A flaw was found in the MCTP protocol in the Linux kernel. The function mctp_unregister() reclaims the device’s relevant resource when a netcard detaches. However, a running routine may be unaware of this and cause the use-after-free of the mdev->addrs object, potentially leading to a denial of service.

Source: CVE-2023-3439

CVE-2023-3138

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CVE-2023-3138

A vulnerability was found in libX11. The security flaw occurs because the functions in src/InitExt.c in libX11 do not check that the values provided for the Request, Event, or Error IDs are within the bounds of the arrays that those functions write to, using those IDs as array indexes. They trust that they were called with values provided by an Xserver adhering to the bounds specified in the X11 protocol, as all X servers provided by X.Org do. As the protocol only specifies a single byte for these values, an out-of-bounds value provided by a malicious server (or a malicious proxy-in-the-middle) can only overwrite other portions of the Display structure and not write outside the bounds of the Display structure itself, possibly causing the client to crash with this memory corruption.

Source: CVE-2023-3138

CVE-2023-3243

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CVE-2023-3243

** UNSUPPPORTED WHEN ASSIGNED **
** UNSUPPORTED WHEN ASSIGNED ** [An attacker can capture an authenticating hash
and utilize it to create new sessions. The hash is also a poorly salted MD5
hash, which could result in a successful brute force password attack. Recommended fix: Upgrade to a supported product such
as Alerton
ACM.] Out of an abundance of caution, this CVE ID is being assigned to
better serve our customers and ensure all who are still running this product understand
that the product is end of life and should be removed or upgraded. 

Source: CVE-2023-3243

CVE-2023-3390

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CVE-2023-3390

A use-after-free vulnerability was found in the Linux kernel’s netfilter subsystem in net/netfilter/nf_tables_api.c.

Mishandled error handling with NFT_MSG_NEWRULE makes it possible to use a dangling pointer in the same transaction causing a use-after-free vulnerability. This flaw allows a local attacker with user access to cause a privilege escalation issue.

We recommend upgrading past commit 1240eb93f0616b21c675416516ff3d74798fdc97.

Source: CVE-2023-3390