Synopsis
The remote NewStart CGSL host is affected by multiple vulnerabilities.
Description
The remote NewStart CGSL host, running version MAIN 6.02, has binutils packages installed that are affected by multiple vulnerabilities:
- An issue was discovered in the Bidirectional Algorithm in the Unicode Specification through 14.0. It permits the visual reordering of characters via control sequences, which can be used to craft source code that renders different logic than the logical ordering of tokens ingested by compilers and interpreters.
Adversaries can leverage this to encode source code for compilers accepting Unicode such that targeted vulnerabilities are introduced invisibly to human reviewers. NOTE: the Unicode Consortium offers the following alternative approach to presenting this concern. An issue is noted in the nature of international text that can affect applications that implement support for The Unicode Standard and the Unicode Bidirectional Algorithm (all versions). Due to text display behavior when text includes left-to- right and right-to-left characters, the visual order of tokens may be different from their logical order.
Additionally, control characters needed to fully support the requirements of bidirectional text can further obfuscate the logical order of tokens. Unless mitigated, an adversary could craft source code such that the ordering of tokens perceived by human reviewers does not match what will be processed by a compiler/interpreter/etc. The Unicode Consortium has documented this class of vulnerability in its document, Unicode Technical Report #36, Unicode Security Considerations. The Unicode Consortium also provides guidance on mitigations for this class of issues in Unicode Technical Standard #39, Unicode Security Mechanisms, and in Unicode Standard Annex #31, Unicode Identifier and Pattern Syntax. Also, the BIDI specification allows applications to tailor the implementation in ways that can mitigate misleading visual reordering in program text; see HL4 in Unicode Standard Annex #9, Unicode Bidirectional Algorithm.
(CVE-2021-42574)
- The display_debug_ranges function in dwarf.c in GNU Binutils 2.30 allows remote attackers to cause a denial of service (integer overflow and application crash) or possibly have unspecified other impact via a crafted ELF file, as demonstrated by objdump. (CVE-2018-7643)
- process_cu_tu_index in dwarf.c in GNU Binutils 2.30 allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via a crafted binary file, as demonstrated by readelf.
(CVE-2018-10372)
- concat_filename in dwarf2.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted binary file, as demonstrated by nm-new. (CVE-2018-10373)
- The _bfd_XX_bfd_copy_private_bfd_data_common function in peXXigen.c in the Binary File Descriptor (BFD) library (aka libbfd), as distributed in GNU Binutils 2.30, processes a negative Data Directory size with an unbounded loop that increases the value of (external_IMAGE_DEBUG_DIRECTORY) *edd so that the address exceeds its own memory region, resulting in an out-of-bounds memory write, as demonstrated by objcopy copying private info with _bfd_pex64_bfd_copy_private_bfd_data_common in pex64igen.c. (CVE-2018-10534)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Upgrade the vulnerable CGSL binutils packages. Note that updated packages may not be available yet. Please contact ZTE for more information.
Plugin Details
File Name: newstart_cgsl_NS-SA-2022-0087_binutils.nasl
Supported Sensors: Nessus
Risk Information
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:zte:cgsl_main:binutils, p-cpe:/a:zte:cgsl_main:binutils-devel, cpe:/o:zte:cgsl_main:6
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/ZTE-CGSL/release, Host/ZTE-CGSL/rpm-list
Exploit Ease: Exploits are available
Patch Publication Date: 11/9/2022
Vulnerability Publication Date: 1/26/2018
Reference Information
CVE: CVE-2018-10372, CVE-2018-10373, CVE-2018-10534, CVE-2018-10535, CVE-2018-17358, CVE-2018-20002, CVE-2018-6323, CVE-2018-6759, CVE-2018-7208, CVE-2018-7568, CVE-2018-7569, CVE-2018-7570, CVE-2018-7642, CVE-2018-7643, CVE-2018-8945, CVE-2020-35448, CVE-2021-20197, CVE-2021-20284, CVE-2021-42574