CVE-2023-20135
published 2023-09-13CVE-2023-20135: A vulnerability in Cisco IOS XR Software image verification checks could allow an authenticated, local attacker to execute arbitrary code on the underlying…
PriorityP336high7CVSS 3.1
AVLACHPRLUINSUCHIHAH
EPSS
0.09%
0.5th percentile
A vulnerability in Cisco IOS XR Software image verification checks could allow an authenticated, local attacker to execute arbitrary code on the underlying operating system.
This vulnerability is due to a time-of-check, time-of-use (TOCTOU) race condition when an install query regarding an ISO image is performed during an install operation that uses an ISO image. An attacker could exploit this vulnerability by modifying an ISO image and then carrying out install requests in parallel. A successful exploit could allow the attacker to execute arbitrary code on an affected device.
Affected
13 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | cisco_ios_xr_software | — | — |
| cisco | ios_xr | — | — |
| cisco | ios_xr | >= 7.5.2 < 7.6 | 7.6 |
| cisco | ios_xr | >= 7.7 < 7.10.1 | 7.10.1 |
CVSS provenance
nvdv3.17.0HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
vendor_cisco5.7MEDIUM
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GHSA
GHSA-6v48-qpg5-fj4m: A vulnerability in Cisco IOS XR Software image verification checks could allow an authenticated, local attacker to execute arbitrary code on the under
ghsa_unreviewed·2023-09-13
CVE-2023-20135 [HIGH] CWE-347 GHSA-6v48-qpg5-fj4m: A vulnerability in Cisco IOS XR Software image verification checks could allow an authenticated, local attacker to execute arbitrary code on the under
A vulnerability in Cisco IOS XR Software image verification checks could allow an authenticated, local attacker to execute arbitrary code on the underlying operating system.
This vulnerability is due to a time-of-check, time-of-use (TOCTOU) race condition when an install query regarding an ISO image is performed during an install operation that uses an ISO image. An attacker could exploit this vulnerability by modifying an ISO image and then carrying out install requests in parallel. A successful exploit could allow the attacker to execute arbitrary code on an affected device.
Cisco
Cisco IOS XR Software Image Verification Vulnerability
vendor_cisco·2023-09-13·CVSS 5.7
CVE-2023-20135 [MEDIUM] CWE-347 Cisco IOS XR Software Image Verification Vulnerability
Cisco IOS XR Software Image Verification Vulnerability
A vulnerability in Cisco IOS XR Software image verification checks could allow an authenticated, local attacker to execute arbitrary code on the underlying operating system.
This vulnerability is due to a time-of-check, time-of-use (TOCTOU) race condition when an install query regarding an ISO image is performed during an install operation that uses an ISO image. An attacker could exploit this vulnerability by modifying an ISO image and then carrying out install requests in parallel. A successful exploit could allow the attacker to execute arbitrary code on an affected device.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is available at t
Cisco
Cisco IOS XR Software Image Verification Vulnerability
vendor_cisco·CVSS 3.1
CVE-2023-20135 Cisco IOS XR Software Image Verification Vulnerability
CVE-2023-20135: Cisco IOS XR Software Image Verification Vulnerability
A vulnerability in Cisco IOS XR Software image verification checks could allow an authenticated, local attacker to execute arbitrary code on the underlying operating system. This vulnerability is due to a time-of-check, time-of-use (TOCTOU) race condition when an install query regarding an ISO image is performed during an install operation that uses an ISO image. An attacker could exploit this vulnerability by modifying an ISO image and then carrying out install requests in parallel. A successful exploit could allow the attacker to execute arbitrary code on an affected device. Cisco has released software updates that address this vulnerability. There are no
CVSS: 3.1
CWE: CWE-347, CWE-347
Bug IDs: CSCwd87928
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2023-09-13
Published