CVE Vulnerabilities

CVE-2017-11306

Out-of-bounds Read

Published: May 19, 2018 | Modified: Sep 08, 2021
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
10 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

Adobe Acrobat and Reader versions 2017.012.20098 and earlier, 2017.011.30066 and earlier, 2015.006.30355 and earlier, 11.0.22 and earlier have an exploitable out-of-bounds read vulnerability. Successful exploitation could lead to arbitrary code execution in the context of the current user.

Weakness

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

Affected Software

Name Vendor Start Version End Version
Acrobat Adobe 11.0.0 (including) 11.0.22 (including)
Acrobat Adobe 17.011.30066 (including) 17.011.30068 (excluding)
Acrobat_dc Adobe 15.006.30355 (including) 15.006.30392 (excluding)
Acrobat_dc Adobe 17.012.20098 (including) 18.009.20044 (excluding)
Acrobat_reader Adobe 11.0.0 (including) 11.0.22 (including)
Acrobat_reader Adobe 17.011.30066 (including) 17.011.30068 (excluding)
Acrobat_reader_dc Adobe 15.006.30355 (including) 15.006.30392 (excluding)
Acrobat_reader_dc Adobe 17.012.20098 (including) 18.009.20044 (excluding)

Potential Mitigations

  • Assume all input is malicious. Use an “accept known good” input validation strategy, i.e., use a list of acceptable inputs that strictly conform to specifications. Reject any input that does not strictly conform to specifications, or transform it into something that does.
  • When performing input validation, consider all potentially relevant properties, including length, type of input, the full range of acceptable values, missing or extra inputs, syntax, consistency across related fields, and conformance to business rules. As an example of business rule logic, “boat” may be syntactically valid because it only contains alphanumeric characters, but it is not valid if the input is only expected to contain colors such as “red” or “blue.”
  • Do not rely exclusively on looking for malicious or malformed inputs. This is likely to miss at least one undesirable input, especially if the code’s environment changes. This can give attackers enough room to bypass the intended validation. However, denylists can be useful for detecting potential attacks or determining which inputs are so malformed that they should be rejected outright.
  • To reduce the likelihood of introducing an out-of-bounds read, ensure that you validate and ensure correct calculations for any length argument, buffer size calculation, or offset. Be especially careful of relying on a sentinel (i.e. special character such as NUL) in untrusted inputs.

References