CVE Vulnerabilities

CVE-2019-17177

Missing Release of Memory after Effective Lifetime

Published: Oct 04, 2019 | Modified: Jul 21, 2021
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
5.9 LOW
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
LOW

libfreerdp/codec/region.c in FreeRDP through 1.1.x and 2.x through 2.0.0-rc4 has memory leaks because a supplied realloc pointer (i.e., the first argument to realloc) is also used for a realloc return value.

Weakness

The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory.

Affected Software

Name Vendor Start Version End Version
Freerdp Freerdp * 1.0.2 (including)
Freerdp Freerdp 1.1.0-beta (including) 1.1.0-beta (including)
Freerdp Freerdp 1.1.0-beta1 (including) 1.1.0-beta1 (including)
Freerdp Freerdp 2.0.0-beta1 (including) 2.0.0-beta1 (including)
Freerdp Freerdp 2.0.0-rc0 (including) 2.0.0-rc0 (including)
Freerdp Freerdp 2.0.0-rc1 (including) 2.0.0-rc1 (including)
Freerdp Freerdp 2.0.0-rc2 (including) 2.0.0-rc2 (including)
Freerdp Freerdp 2.0.0-rc3 (including) 2.0.0-rc3 (including)
Freerdp Freerdp 2.0.0-rc4 (including) 2.0.0-rc4 (including)
Freerdp Ubuntu trusty *
Freerdp2 Ubuntu bionic *
Freerdp2 Ubuntu disco *
Freerdp2 Ubuntu eoan *
Freerdp2 Ubuntu esm-infra/bionic *
Freerdp2 Ubuntu trusty *

Potential Mitigations

  • Choose a language or tool that provides automatic memory management, or makes manual memory management less error-prone.
  • For example, glibc in Linux provides protection against free of invalid pointers.
  • When using Xcode to target OS X or iOS, enable automatic reference counting (ARC) [REF-391].
  • To help correctly and consistently manage memory when programming in C++, consider using a smart pointer class such as std::auto_ptr (defined by ISO/IEC ISO/IEC 14882:2003), std::shared_ptr and std::unique_ptr (specified by an upcoming revision of the C++ standard, informally referred to as C++ 1x), or equivalent solutions such as Boost.

References