CVE detail
CVE-2021-34718
A vulnerability in the SSH Server process of Cisco IOS XR Software could allow an authenticated, remote attacker to overwrite and read arbitrary files on the local device. This vulnerability is due to insufficient input validation of arguments that are supplied by the user for a specific file transfer method. An attacker with lower-level privileges could exploit this vulnerability by specifying Secure Copy Protocol (SCP) parameters when authenticating to a device. A successful exploit could allow the attacker to elevate their privileges and retrieve and upload files on a device that they should not have access to.
Buzz score
Why this CVE is surfacing
This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.
Buzz score components · mention 11.0 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Why it matters now
Mention timeline
- Total mentions
- 0
- within the 30d window
- Peak daily
- 0
- highest bucket
Evidence
Source links by recency
2 source links · newest first
Cisco fixed multiple high-severity flaws in the IOS XR software that can allow attackers to trigger a DoS condition, elevate privileges, overwrite/read arbitrary files. Cisco released security updates to address multiple high-severity vulnerabilities in the IOS XR software that can be exploited to conduct multiple malicious activities, such as rebooting devices and elevate privileges. The […]
newssecurityaffairs.comSep 11, 2021, 6:56 PMCisco this week released patches for multiple high-severity vulnerabilities in the IOS XR software and warned that attackers could exploit these bugs to reboot devices, elevate privileges, or overwrite and read arbitrary files.
newswww.securityweek.comSep 10, 2021, 2:33 PM
Exploit code
Public exploit repository references
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0 repository references · best confidence N/A · max 0 stars
Related records
Similar CVEs
6 related CVEs with shared weakness or product evidence
- CVE-2021-34728CVSS 7.8 · High
Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker with a low-privileged account to elevate privileges on an affected device…
- CVE-2021-34720CVSS 8.6 · High
A vulnerability in the IP Service Level Agreements (IP SLA) responder and Two-Way Active Measurement Protocol (TWAMP) features of Cisco IOS XR Software could allow an unauthentica…
- CVE-2021-34719CVSS 7.8 · High
Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker with a low-privileged account to elevate privileges on an affected device…
- CVE-2021-34722CVSS 6.7 · Medium
Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to gain access to the underlying root shell of an affected device and exe…
- CVE-2021-34721CVSS 6.7 · Medium
Multiple vulnerabilities in the CLI of Cisco IOS XR Software could allow an authenticated, local attacker to gain access to the underlying root shell of an affected device and exe…
- CVE-2023-20064CVSS 4.6 · Medium
A vulnerability in the GRand Unified Bootloader (GRUB) for Cisco IOS XR Software could allow an unauthenticated attacker with physical access to the device to view sensitive files…