High severity · published Jun 29, 2021
CVE-2021-27577
Incorrect handling of url fragment vulnerability of Apache Traffic Server allows an attacker to poison the cache
7.5
CVSS
3.4%
EPSS
No
On KEV
Description
Incorrect handling of url fragment vulnerability of Apache Traffic Server allows an attacker to poison the cache. This issue affects Apache Traffic Server 7.0.0 to 7.1.12, 8.0.0 to 8.1.1, 9.0.0 to 9.0.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.4% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0 · source: NVD
TS
Traffic Server · Apache
7.0.0 through 7.1.12; 8.0.0 through 8.1.1; 9.0.0 through 9.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27577
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-27577
Mailing List
https://lists.apache.org/thread.html/ra1a41ff92a70d25bf576d7da2590575e8ff430393a3f4a0c34de4277%40%3Cusers.trafficserver.apache.org%3E
Third Party Advisory
https://www.debian.org/security/2021/dsa-4957
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