Gentoo update for GNU Binutils
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 7 |
| CVE-ID | CVE-2021-20197 CVE-2021-20284 CVE-2021-20294 CVE-2021-3487 CVE-2021-3530 CVE-2021-3549 CVE-2021-45078 |
| CWE-ID | CWE-61 CWE-122 CWE-787 CWE-20 CWE-674 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #3 is available. |
| Vulnerable software |
Gentoo Linux Operating systems & Components / Operating system sys-libs/binutils-libs Operating systems & Components / Operating system package or component sys-devel/binutils Operating systems & Components / Operating system package or component |
| Vendor | Gentoo |
Security Bulletin
This security bulletin contains information about 7 vulnerabilities.
1) UNIX symbolic link following
EUVDB-ID: #VU66492
Risk: Low
CVSSv4.0: 5.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-20197
CWE-ID:
CWE-61 - UNIX Symbolic Link (Symlink) Following
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a symlink following issue within the ar, objcopy, strip, ranlib utilities wen writing output. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.
Successful exploitation of this vulnerability may result in privilege escalation.
MitigationUpdate the affected packages.
sys-devel/binutils to version: 2.38
sys-libs/binutils-libs to version: 2.38
Gentoo Linux: All versions
sys-libs/binutils-libs: before 2.38
sys-devel/binutils: before 2.38
CPE2.3- cpe:2.3:o:gentoo:gentoo_linux:*:*:*:*:*:*:*:*
- cpe:2.3:o:gentoo:sys-libs_binutils-libs:*:*:*:*:*:gentoo_linux:*:*
- cpe:2.3:o:gentoo:sys-devel_binutils:*:*:*:*:*:gentoo_linux:*:*
https://security.gentoo.org/glsa/202208-30
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Heap-based buffer overflow
EUVDB-ID: #VU66493
Risk: High
CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2021-20284
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the _bfd_elf_slurp_secondary_reloc_section() function in elf.c. A remote attacker can pass specially crafted data to the application, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationUpdate the affected packages.
sys-devel/binutils to version: 2.38
sys-libs/binutils-libs to version: 2.38
Gentoo Linux: All versions
sys-libs/binutils-libs: before 2.38
sys-devel/binutils: before 2.38
CPE2.3- cpe:2.3:o:gentoo:gentoo_linux:*:*:*:*:*:*:*:*
- cpe:2.3:o:gentoo:sys-libs_binutils-libs:*:*:*:*:*:gentoo_linux:*:*
- cpe:2.3:o:gentoo:sys-devel_binutils:*:*:*:*:*:gentoo_linux:*:*
https://security.gentoo.org/glsa/202208-30
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Out-of-bounds write
EUVDB-ID: #VU66491
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green]
CVE-ID: CVE-2021-20294
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input in readelf. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.
MitigationUpdate the affected packages.
sys-devel/binutils to version: 2.38
sys-libs/binutils-libs to version: 2.38
Gentoo Linux: All versions
sys-libs/binutils-libs: before 2.38
sys-devel/binutils: before 2.38
CPE2.3- cpe:2.3:o:gentoo:gentoo_linux:*:*:*:*:*:*:*:*
- cpe:2.3:o:gentoo:sys-libs_binutils-libs:*:*:*:*:*:gentoo_linux:*:*
- cpe:2.3:o:gentoo:sys-devel_binutils:*:*:*:*:*:gentoo_linux:*:*
https://security.gentoo.org/glsa/202208-30
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
4) Input validation error
EUVDB-ID: #VU61550
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-3487
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within the BFD library in binutils. A remote attacker who supplies a crafted file to an application linked with BFD can use the DWARF functionality to perform a denial of service (DoS) attack.
MitigationUpdate the affected packages.
sys-devel/binutils to version: 2.38
sys-libs/binutils-libs to version: 2.38
Gentoo Linux: All versions
sys-libs/binutils-libs: before 2.38
sys-devel/binutils: before 2.38
CPE2.3- cpe:2.3:o:gentoo:gentoo_linux:*:*:*:*:*:*:*:*
- cpe:2.3:o:gentoo:sys-libs_binutils-libs:*:*:*:*:*:gentoo_linux:*:*
- cpe:2.3:o:gentoo:sys-devel_binutils:*:*:*:*:*:gentoo_linux:*:*
https://security.gentoo.org/glsa/202208-30
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
5) Uncontrolled Recursion
EUVDB-ID: #VU66490
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-3530
CWE-ID:
CWE-674 - Uncontrolled Recursion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to uncontrolled recursion within the demangle_path() function in rust-demangle.c in GNU libiberty. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
Update the affected packages.
sys-devel/binutils to version: 2.38
sys-libs/binutils-libs to version: 2.38
Gentoo Linux: All versions
sys-libs/binutils-libs: before 2.38
sys-devel/binutils: before 2.38
CPE2.3- cpe:2.3:o:gentoo:gentoo_linux:*:*:*:*:*:*:*:*
- cpe:2.3:o:gentoo:sys-libs_binutils-libs:*:*:*:*:*:gentoo_linux:*:*
- cpe:2.3:o:gentoo:sys-devel_binutils:*:*:*:*:*:gentoo_linux:*:*
https://security.gentoo.org/glsa/202208-30
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
6) Out-of-bounds write
EUVDB-ID: #VU59295
Risk: Medium
CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-3549
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error in the objdump utility. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger an out-of-bounds write by passing a large section to avr_elf32_load_records_from_section() function and execute arbitrary code on the target system.
MitigationUpdate the affected packages.
sys-devel/binutils to version: 2.38
sys-libs/binutils-libs to version: 2.38
Gentoo Linux: All versions
sys-libs/binutils-libs: before 2.38
sys-devel/binutils: before 2.38
CPE2.3- cpe:2.3:o:gentoo:gentoo_linux:*:*:*:*:*:*:*:*
- cpe:2.3:o:gentoo:sys-libs_binutils-libs:*:*:*:*:*:gentoo_linux:*:*
- cpe:2.3:o:gentoo:sys-devel_binutils:*:*:*:*:*:gentoo_linux:*:*
https://security.gentoo.org/glsa/202208-30
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
7) Out-of-bounds write
EUVDB-ID: #VU59293
Risk: Medium
CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-45078
CWE-ID:
CWE-787 - Out-of-bounds write
Exploit availability: No
Description The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to a boundary error in stab_xcoff_builtin_type() function in stabs.c. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.
Note, the vulnerability exists due to incorrect patch for #VU13471 (CVE-2018-12699).
Update the affected packages.
sys-devel/binutils to version: 2.38
sys-libs/binutils-libs to version: 2.38
Gentoo Linux: All versions
sys-libs/binutils-libs: before 2.38
sys-devel/binutils: before 2.38
CPE2.3- cpe:2.3:o:gentoo:gentoo_linux:*:*:*:*:*:*:*:*
- cpe:2.3:o:gentoo:sys-libs_binutils-libs:*:*:*:*:*:gentoo_linux:*:*
- cpe:2.3:o:gentoo:sys-devel_binutils:*:*:*:*:*:gentoo_linux:*:*
https://security.gentoo.org/glsa/202208-30
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
