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CVE Vulnerabilities

CVE-2019-9959

Integer Overflow or Wraparound

Published: Jul 22, 2019 | Modified: Nov 21, 2024
CVSS 3.x
6.5
MEDIUM
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 2.x
4.3 MEDIUM
AV:N/AC:M/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
6.2 LOW
CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
LOW
Vulnerability-free packages from our partners
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2019-9959
CWEhttps://cwe.mitre.org/data/definitions/190.html

The JPXStream::init function in Poppler 0.78.0 and earlier doesnt check for negative values of stream length, leading to an Integer Overflow, thereby making it possible to allocate a large memory chunk on the heap, with a size controlled by an attacker, as demonstrated by pdftocairo.

Weakness

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected Software

Name Vendor Start Version End Version
Poppler Freedesktop * 0.78.0 (including)
Red Hat Enterprise Linux 7 RedHat evince-0:3.28.2-9.el7 *
Red Hat Enterprise Linux 7 RedHat poppler-0:0.26.5-42.el7 *
Red Hat Enterprise Linux 8 RedHat poppler-0:0.66.0-11.el8_0.12 *
Emscripten Ubuntu bionic *
Emscripten Ubuntu devel *
Emscripten Ubuntu disco *
Emscripten Ubuntu eoan *
Emscripten Ubuntu esm-apps/bionic *
Emscripten Ubuntu esm-apps/jammy *
Emscripten Ubuntu esm-apps/noble *
Emscripten Ubuntu esm-apps/xenial *
Emscripten Ubuntu hirsute *
Emscripten Ubuntu impish *
Emscripten Ubuntu jammy *
Emscripten Ubuntu kinetic *
Emscripten Ubuntu lunar *
Emscripten Ubuntu mantic *
Emscripten Ubuntu noble *
Emscripten Ubuntu trusty *
Emscripten Ubuntu xenial *
Poppler Ubuntu bionic *
Poppler Ubuntu disco *
Poppler Ubuntu eoan *
Poppler Ubuntu esm-infra/bionic *
Poppler Ubuntu esm-infra/xenial *
Poppler Ubuntu trusty *
Poppler Ubuntu xenial *

Potential Mitigations

  • Use a language that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
  • If possible, choose a language or compiler that performs automatic bounds checking.
  • Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482].
  • Use libraries or frameworks that make it easier to handle numbers without unexpected consequences.
  • Examples include safe integer handling packages such as SafeInt (C++) or IntegerLib (C or C++). [REF-106]
  • Perform input validation on any numeric input by ensuring that it is within the expected range. Enforce that the input meets both the minimum and maximum requirements for the expected range.
  • Use unsigned integers where possible. This makes it easier to perform validation for integer overflows. When signed integers are required, ensure that the range check includes minimum values as well as maximum values.
  • Understand the programming language’s underlying representation and how it interacts with numeric calculation (CWE-681). Pay close attention to byte size discrepancies, precision, signed/unsigned distinctions, truncation, conversion and casting between types, “not-a-number” calculations, and how the language handles numbers that are too large or too small for its underlying representation. [REF-7]
  • Also be careful to account for 32-bit, 64-bit, and other potential differences that may affect the numeric representation.

References

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