CVE-2021-0268

Summary

CVECVE-2021-0268
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-04-22 20:15:00 UTC
Updated2022-08-05 17:14:00 UTC
DescriptionAn Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting') weakness in J-web of Juniper Networks Junos OS leads to buffer overflows, segment faults, or other impacts, which allows an attacker to modify the integrity of the device and exfiltration information from the device without authentication. The weakness can be exploited to facilitate cross-site scripting (XSS), cookie manipulation (modifying session cookies, stealing cookies) and more. This weakness can also be exploited by directing a user to a seemingly legitimate link from the affected site. The attacker requires no special access or permissions to the device to carry out such attacks. This issue affects: Juniper Networks Junos OS: 18.1 versions prior to 18.1R3-S11; 18.2 versions prior to 18.2R3-S5; 18.3 versions prior to 18.3R2-S4, 18.3R3-S3; 18.4 versions prior to 18.4R2-S5, 18.4R3-S3; 19.1 versions prior to 19.1R2-S2, 19.1R3-S2; 19.2 versions prior to 19.2R1-S5, 19.2R2; 19.3 versions prior to 19.3R3; 19.4 versions prior to 19.4R1-S3, 19.4R2, 19.4R3; 20.1 versions prior to 20.1R1-S2, 20.1R2. This issue does not affect Juniper Networks Junos OS versions prior to 18.1R1.

Risk And Classification

Problem Types: CWE-74

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Juniper Junos 18.1 - All All
Operating System Juniper Junos 18.1 r1 All All
Operating System Juniper Junos 18.1 r2 All All
Operating System Juniper Junos 18.1 r2-s1 All All
Operating System Juniper Junos 18.1 r2-s2 All All
Operating System Juniper Junos 18.1 r2-s4 All All
Operating System Juniper Junos 18.1 r3 All All
Operating System Juniper Junos 18.1 r3-s1 All All
Operating System Juniper Junos 18.1 r3-s10 All All
Operating System Juniper Junos 18.1 r3-s2 All All
Operating System Juniper Junos 18.1 r3-s3 All All
Operating System Juniper Junos 18.1 r3-s4 All All
Operating System Juniper Junos 18.1 r3-s5 All All
Operating System Juniper Junos 18.1 r3-s6 All All
Operating System Juniper Junos 18.1 r3-s7 All All
Operating System Juniper Junos 18.1 r3-s8 All All
Operating System Juniper Junos 18.1 r3-s9 All All
Operating System Juniper Junos 18.2 - All All
Operating System Juniper Junos 18.2 r1 All All
Operating System Juniper Junos 18.2 r1 - All
Operating System Juniper Junos 18.2 r1-s2 All All
Operating System Juniper Junos 18.2 r1-s3 All All
Operating System Juniper Junos 18.2 r1-s4 All All
Operating System Juniper Junos 18.2 r1-s5 All All
Operating System Juniper Junos 18.2 r2 All All
Operating System Juniper Junos 18.2 r2-s1 All All
Operating System Juniper Junos 18.2 r2-s2 All All
Operating System Juniper Junos 18.2 r2-s3 All All
Operating System Juniper Junos 18.2 r2-s4 All All
Operating System Juniper Junos 18.2 r2-s5 All All
Operating System Juniper Junos 18.2 r2-s6 All All
Operating System Juniper Junos 18.2 r2-s7 All All
Operating System Juniper Junos 18.2 r3 All All
Operating System Juniper Junos 18.2 r3-s1 All All
Operating System Juniper Junos 18.2 r3-s2 All All
Operating System Juniper Junos 18.2 r3-s3 All All
Operating System Juniper Junos 18.2 r3-s4 All All
Operating System Juniper Junos 18.3 - All All
Operating System Juniper Junos 18.3 r1 All All
Operating System Juniper Junos 18.3 r1-s1 All All
Operating System Juniper Junos 18.3 r1-s2 All All
Operating System Juniper Junos 18.3 r1-s3 All All
Operating System Juniper Junos 18.3 r1-s4 All All
Operating System Juniper Junos 18.3 r1-s5 All All
Operating System Juniper Junos 18.3 r1-s6 All All
Operating System Juniper Junos 18.3 r2 All All
Operating System Juniper Junos 18.3 r2-s1 All All
Operating System Juniper Junos 18.3 r2-s2 All All
Operating System Juniper Junos 18.3 r2-s3 All All
Operating System Juniper Junos 18.3 r3 All All
Operating System Juniper Junos 18.3 r3-s1 All All
Operating System Juniper Junos 18.3 r3-s2 All All
Operating System Juniper Junos 18.4 - All All
Operating System Juniper Junos 18.4 r1 All All
Operating System Juniper Junos 18.4 r1-s1 All All
Operating System Juniper Junos 18.4 r1-s2 All All
Operating System Juniper Junos 18.4 r1-s3 All All
Operating System Juniper Junos 18.4 r1-s4 All All
Operating System Juniper Junos 18.4 r1-s5 All All
Operating System Juniper Junos 18.4 r1-s6 All All
Operating System Juniper Junos 18.4 r1-s7 All All
Operating System Juniper Junos 18.4 r2 All All
Operating System Juniper Junos 18.4 r2-s1 All All
Operating System Juniper Junos 18.4 r2-s2 All All
Operating System Juniper Junos 18.4 r2-s3 All All
Operating System Juniper Junos 18.4 r2-s4 All All
Operating System Juniper Junos 18.4 r3 All All
Operating System Juniper Junos 18.4 r3-s1 All All
Operating System Juniper Junos 18.4 r3-s2 All All
Operating System Juniper Junos 19.1 - All All
Operating System Juniper Junos 19.1 r1 All All
Operating System Juniper Junos 19.1 r1-s1 All All
Operating System Juniper Junos 19.1 r1-s2 All All
Operating System Juniper Junos 19.1 r1-s3 All All
Operating System Juniper Junos 19.1 r1-s4 All All
Operating System Juniper Junos 19.1 r1-s5 All All
Operating System Juniper Junos 19.1 r2 All All
Operating System Juniper Junos 19.1 r2-s1 All All
Operating System Juniper Junos 19.1 r3 All All
Operating System Juniper Junos 19.1 r3-s1 All All
Operating System Juniper Junos 19.2 - All All
Operating System Juniper Junos 19.2 r1 All All
Operating System Juniper Junos 19.2 r1-s1 All All
Operating System Juniper Junos 19.2 r1-s2 All All
Operating System Juniper Junos 19.2 r1-s3 All All
Operating System Juniper Junos 19.2 r1-s4 All All
Operating System Juniper Junos 19.3 - All All
Operating System Juniper Junos 19.3 r1 All All
Operating System Juniper Junos 19.3 r1-s1 All All
Operating System Juniper Junos 19.3 r2 All All
Operating System Juniper Junos 19.3 r2-s1 All All
Operating System Juniper Junos 19.3 r2-s2 All All
Operating System Juniper Junos 19.3 r2-s3 All All
Operating System Juniper Junos 19.3 r2-s4 All All
Operating System Juniper Junos 19.3 r2-s5 All All
Operating System Juniper Junos 19.4 r1 All All
Operating System Juniper Junos 19.4 r1-s1 All All
Operating System Juniper Junos 19.4 r1-s2 All All
Operating System Juniper Junos 20.1 r1 All All
Operating System Juniper Junos 20.1 r1-s1 All All

References

ReferenceSourceLinkTags
2021-04 Security Bulletin: Junos OS: J-Web has an Improper Neutralization of CRLF Sequences in its HTTP Headers which allows an attacker to carry out multiple types of attacks. (CVE-2021-0268) - Juniper Networks MISC kb.juniper.net
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

LEGACY: The Juniper SIRT wishes to thank Luca Ercoli for responsibly reporting one of the issues resolved in this update.

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