CVE-2020-5235

CVSS V2 High 7.5 CVSS V3 Critical 9.8
Description
There is a potentially exploitable out of memory condition In Nanopb before 0.4.1, 0.3.9.5, and 0.2.9.4. When nanopb is compiled with PB_ENABLE_MALLOC, the message to be decoded contains a repeated string, bytes or message field and realloc() runs out of memory when expanding the array nanopb can end up calling `free()` on a pointer value that comes from uninitialized memory. Depending on platform this can result in a crash or further memory corruption, which may be exploitable in some cases. This problem is fixed in nanopb-0.4.1, nanopb-0.3.9.5, nanopb-0.2.9.4.
Overview
  • CVE ID
  • CVE-2020-5235
  • Assigner
  • security-advisories@github.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-02-04T03:15:10
  • Last Modified Date
  • 2020-02-06T18:51:56
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:nanopb_project:nanopb:*:*:*:*:*:*:*:* 1 OR 0.2.9.4
cpe:2.3:a:nanopb_project:nanopb:*:*:*:*:*:*:*:* 1 OR 0.3.0 0.3.9.5
cpe:2.3:a:nanopb_project:nanopb:*:*:*:*:*:*:*:* 1 OR 0.4.0 0.4.1
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 7.5
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
History
Created Old Value New Value Data Type Notes
2022-05-10 16:50:52 Added to TrackCVE
2022-12-04 10:35:05 2020-02-04T03:15Z 2020-02-04T03:15:10 CVE Published Date updated
2022-12-04 10:35:05 2020-02-06T18:51:56 CVE Modified Date updated
2022-12-04 10:35:05 Analyzed Vulnerability Status updated