Integer overflow in IBM RackSwitch firmware products
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-35942 |
| CWE-ID | CWE-190 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
IBM RackSwitch G8264CS Hardware solutions / Routers & switches, VoIP, GSM, etc G8264CS_SI_Fabric_Image Hardware solutions / Routers & switches, VoIP, GSM, etc IBM RackSwitch G8124E Hardware solutions / Routers & switches, VoIP, GSM, etc IBM RackSwitch G8124 Hardware solutions / Routers & switches, VoIP, GSM, etc IBM RackSwitch G8264T Hardware solutions / Routers & switches, VoIP, GSM, etc IBM RackSwitch G8332 Hardware solutions / Routers & switches, VoIP, GSM, etc IBM RackSwitch G8264 Hardware solutions / Routers & switches, VoIP, GSM, etc IBM RackSwitch G8052 Hardware solutions / Routers & switches, VoIP, GSM, etc IBM RackSwitch G8316 Hardware solutions / Routers & switches, VoIP, GSM, etc IBM RackSwitch G7028 Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | IBM Corporation |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Integer overflow
EUVDB-ID: #VU55972
Risk: Medium
CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-35942
CWE-ID:
CWE-190 - Integer overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information or perform a DoS attack.
The vulnerability exists due to integer overflow in parse_param in posix/wordexp.c in the GNU C Library when called with an untrusted pattern. A remote attacker can pass specially crafted data to the application, trigger integer overflow and read arbitrary memory on the system of perform a denial of service (DoS) attack.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall update from vendor's website.
Vulnerable software versionsIBM RackSwitch G8264CS: before 7.8.32.0
G8264CS_SI_Fabric_Image: before 7.8.32.0
IBM RackSwitch G8124E: before 7.11.24.0
IBM RackSwitch G8124: before 7.11.24.0
IBM RackSwitch G8264T: before 7.9.34.0
IBM RackSwitch G8332: before 7.7.40.0
IBM RackSwitch G8264: before 7.11.24.0
IBM RackSwitch G8052: before 7.11.24.0
IBM RackSwitch G8316: before 7.9.34.0
IBM RackSwitch G7028: before 7.6.12.0
CPE2.3- cpe:2.3:h:ibm_corporation:ibm_rackswitch_g8264cs:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:g8264cs_si_fabric_image:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:ibm_rackswitch_g8124e:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:ibm_rackswitch_g8124:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:ibm_rackswitch_g8264t:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:ibm_rackswitch_g8332:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:ibm_rackswitch_g8264:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:ibm_rackswitch_g8052:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:ibm_rackswitch_g8316:*:*:*:*:*:*:*:*
- cpe:2.3:h:ibm_corporation:ibm_rackswitch_g7028:*:*:*:*:*:*:*:*
https://www.ibm.com/blogs/psirt/security-bulletin-ibm-rackswitch-firmware-products-are-affected-by-a-vulnerability-in-glibc-cve-2021-35942/
https://www.ibm.com/support/pages/node/6591511
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
