Category Archives: Advisories

USN-5651-2: strongSwan vulnerability

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USN-5651-1 fixed a vulnerability in strongSwan. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Lahav Schlesinger discovered that strongSwan incorrectly handled certain OCSP URIs and
and CRL distribution points (CDP) in certificates. A remote attacker could
possibly use this issue to initiate IKE_SAs and send crafted certificates
that contain URIs pointing to servers under their control, which can lead
to a denial-of-service attack.

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USN-5651-1: strongSwan vulnerability

Read Time:16 Second

Lahav Schlesinger discovered that strongSwan incorrectly handled certain OCSP URIs and
and CRL distribution points (CDP) in certificates. A remote attacker could
possibly use this issue to initiate IKE_SAs and send crafted certificates
that contain URIs pointing to servers under their control, which can lead
to a denial-of-service attack.

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USN-5614-2: Wayland vulnerability

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USN-5614-1 fixed a vulnerability in Wayland. This update
provides the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that Wayland incorrectly handled reference counting
certain objects. An attacker could use this issue to cause Wayland to
crash, resulting in a denial of service, or possibly execute arbitrary
code.

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USN-5652-1: Linux kernel (Azure) vulnerabilities

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It was discovered that the framebuffer driver on the Linux kernel did not
verify size limits when changing font or screen size, leading to an out-of-
bounds write. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2021-33655)

Domingo Dirutigliano and Nicola Guerrera discovered that the netfilter
subsystem in the Linux kernel did not properly handle rules that truncated
packets below the packet header size. When such rules are in place, a
remote attacker could possibly use this to cause a denial of service
(system crash). (CVE-2022-36946)

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