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Ubuntu Security Notice USN-7217-1
January 20, 2025

libpodofo vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in PoDoFo.

Software Description:
- libpodofo: PDF manipulation library

Details:

It was discovered that the PoDoFo library could dereference a NULL pointer
when getting the number of pages in a PDF. If a user or application were
tricked into opening a crafted PDF file, an attacker could possibly use
this issue to cause a denial of service. This issue only affected
Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.
(CVE-2018-11255)

It was discovered that PoDoFo library incorrectly handled memory when
computing an encryption key, which could lead to a buffer overflow. If a
user or application were tricked into opening a crafted PDF file, an
attacker could possibly use this issue to cause a denial of service.
(CVE-2018-12983)

It was discovered that the PoDoFo library incorrectly handled memory
allocation. If a user or application were tricked into opening a crafted
PDF file, an attacker could possibly use this issue to cause a denial of
service. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and
Ubuntu 22.04 LTS. (CVE-2018-20797)

It was discovered that the PoDoFo library did not properly validate memcpy
arguments. If a user or application were tricked into opening a crafted
PDF file, an attacker could possibly use this issue to cause a denial of
service or execute arbitrary code. This issue only affected
Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. (CVE-2018-5308)

It was discovered that the PoDoFo library incorrectly handled memory in
the GetNextToken function, which could lead to a buffer overflow. If a
user or application were tricked into opening a crafted PDF file, an
attacker could possibly use this issue to cause a denial of service.
This issue only affected Ubuntu 16.04 LTS. (CVE-2017-5886)

It was discovered that the PoDoFo library could enter an infinite loop,
which could lead to a stack overflow. If a user or application were
tricked into opening a crafted PDF file, an attacker could possibly use
this issue to cause a denial of service or execute arbitrary code. This
issue only affected Ubuntu 20.04 LTS and Ubuntu 22.04 LTS.
(CVE-2018-8002, CVE-2020-18971, CVE-2021-30471, CVE-2021-30470)

It was discovered that the PoDoFo library incorrectly handled memory
allocation due to nInitialSize not being validated. If a user or
application were tricked into opening a crafted PDF file, an attacker
could possibly use this issue to cause a denial of service. This issue
only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and
Ubuntu 20.04 LTS. (CVE-2019-10723)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.04 LTS
  libpodofo-utils                 0.9.7+dfsg-3ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libpodofo0.9.7                  0.9.7+dfsg-3ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 20.04 LTS
  libpodofo-utils                 0.9.6+dfsg-5ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libpodofo0.9.6                  0.9.6+dfsg-5ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  libpodofo-utils                 0.9.5-9ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libpodofo0.9.5                  0.9.5-9ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  libpodofo-utils                 0.9.3-4ubuntu0.1~esm1
                                  Available with Ubuntu Pro
  libpodofo0.9.3                  0.9.3-4ubuntu0.1~esm1
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  libpodofo0.9.0                  0.9.0-1.2ubuntu0.1~esm3
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7217-1
  CVE-2017-5886, CVE-2018-11255, CVE-2018-12983, CVE-2018-20797,
  CVE-2018-5308, CVE-2018-8002, CVE-2019-10723, CVE-2020-18971,
  CVE-2021-30470, CVE-2021-30471