Amazon Linux AMI update for libX11
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2023-43785 CVE-2023-43786 CVE-2023-43787 |
| CWE-ID | CWE-125 CWE-835 CWE-190 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
Amazon Linux AMI Operating systems & Components / Operating system libX11 Operating systems & Components / Operating system package or component |
| Vendor | Amazon Web Services |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Out-of-bounds read
EUVDB-ID: #VU81432
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2023-43785
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition within the _XkbReadKeySyms() function. A local user can trigger an out-of-bounds read error and read contents of memory on the system.
MitigationUpdate the affected packages:
aarch64:Vulnerable software versions
libX11-debuginfo-1.7.2-3.amzn2023.0.4.aarch64
libX11-xcb-debuginfo-1.7.2-3.amzn2023.0.4.aarch64
libX11-xcb-1.7.2-3.amzn2023.0.4.aarch64
libX11-1.7.2-3.amzn2023.0.4.aarch64
libX11-debugsource-1.7.2-3.amzn2023.0.4.aarch64
libX11-devel-1.7.2-3.amzn2023.0.4.aarch64
noarch:
libX11-common-1.7.2-3.amzn2023.0.4.noarch
src:
libX11-1.7.2-3.amzn2023.0.4.src
x86_64:
libX11-xcb-1.7.2-3.amzn2023.0.4.x86_64
libX11-xcb-debuginfo-1.7.2-3.amzn2023.0.4.x86_64
libX11-1.7.2-3.amzn2023.0.4.x86_64
libX11-debuginfo-1.7.2-3.amzn2023.0.4.x86_64
libX11-debugsource-1.7.2-3.amzn2023.0.4.x86_64
libX11-devel-1.7.2-3.amzn2023.0.4.x86_64
Amazon Linux AMI: All versions
libX11: before 1.7.2-3
CPE2.3- cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
- cpe:2.3:o:amazon_web_services:libx11:*:*:*:*:*:amazon_linux_ami:*:*
https://alas.aws.amazon.com/AL2023/ALAS-2023-383.html
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) Infinite loop
EUVDB-ID: #VU81433
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2023-43786
CWE-ID:
CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Exploit availability: No
DescriptionThe vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop within the PutSubImage() function. A local user can consume all available system resources and cause denial of service conditions.
MitigationUpdate the affected packages:
aarch64:Vulnerable software versions
libX11-debuginfo-1.7.2-3.amzn2023.0.4.aarch64
libX11-xcb-debuginfo-1.7.2-3.amzn2023.0.4.aarch64
libX11-xcb-1.7.2-3.amzn2023.0.4.aarch64
libX11-1.7.2-3.amzn2023.0.4.aarch64
libX11-debugsource-1.7.2-3.amzn2023.0.4.aarch64
libX11-devel-1.7.2-3.amzn2023.0.4.aarch64
noarch:
libX11-common-1.7.2-3.amzn2023.0.4.noarch
src:
libX11-1.7.2-3.amzn2023.0.4.src
x86_64:
libX11-xcb-1.7.2-3.amzn2023.0.4.x86_64
libX11-xcb-debuginfo-1.7.2-3.amzn2023.0.4.x86_64
libX11-1.7.2-3.amzn2023.0.4.x86_64
libX11-debuginfo-1.7.2-3.amzn2023.0.4.x86_64
libX11-debugsource-1.7.2-3.amzn2023.0.4.x86_64
libX11-devel-1.7.2-3.amzn2023.0.4.x86_64
Amazon Linux AMI: All versions
libX11: before 1.7.2-3
CPE2.3- cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
- cpe:2.3:o:amazon_web_services:libx11:*:*:*:*:*:amazon_linux_ami:*:*
https://alas.aws.amazon.com/AL2023/ALAS-2023-383.html
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.
3) Integer overflow
EUVDB-ID: #VU81434
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2023-43787
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer overflow within the XCreateImage() function. A local user can trigger integer overflow and execute arbitrary code with elevated privileges.
Update the affected packages:
aarch64:Vulnerable software versions
libX11-debuginfo-1.7.2-3.amzn2023.0.4.aarch64
libX11-xcb-debuginfo-1.7.2-3.amzn2023.0.4.aarch64
libX11-xcb-1.7.2-3.amzn2023.0.4.aarch64
libX11-1.7.2-3.amzn2023.0.4.aarch64
libX11-debugsource-1.7.2-3.amzn2023.0.4.aarch64
libX11-devel-1.7.2-3.amzn2023.0.4.aarch64
noarch:
libX11-common-1.7.2-3.amzn2023.0.4.noarch
src:
libX11-1.7.2-3.amzn2023.0.4.src
x86_64:
libX11-xcb-1.7.2-3.amzn2023.0.4.x86_64
libX11-xcb-debuginfo-1.7.2-3.amzn2023.0.4.x86_64
libX11-1.7.2-3.amzn2023.0.4.x86_64
libX11-debuginfo-1.7.2-3.amzn2023.0.4.x86_64
libX11-debugsource-1.7.2-3.amzn2023.0.4.x86_64
libX11-devel-1.7.2-3.amzn2023.0.4.x86_64
Amazon Linux AMI: All versions
libX11: before 1.7.2-3
CPE2.3- cpe:2.3:o:amazon_web_services:amazon_linux_ami:*:*:*:*:*:*:*:*
- cpe:2.3:o:amazon_web_services:libx11:*:*:*:*:*:amazon_linux_ami:*:*
https://alas.aws.amazon.com/AL2023/ALAS-2023-383.html
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.
