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CVE-2021-0268— 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.

CVSS 8.8 · High EPSS 0.27% · P50
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I. Basic Information for CVE-2021-0268

Vulnerability Information
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Vulnerability Title
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.
Source: NVD (National Vulnerability Database)
Vulnerability Description
An 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
HTTP头部中CRLF序列转义处理不恰当(HTTP响应分割)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Juniper Networks Junos OS 注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Junos OS 存在安全漏洞，攻击者利用这个漏洞可进行跨站脚本编写(XSS)，可以将用户从受影响的站点引导到看似合法的链接，从而进行漏洞利用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Juniper NetworksJunos OS unspecified ~ 18.1R1 -

II. Public POCs for CVE-2021-0268

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III. Intelligence Information for CVE-2021-0268

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Same Patch Batch · Juniper Networks · 2021-04-22 · 53 CVEs total

CVE-2021-024810.0 CRITICALNFX Series: Hard-coded credentials allow an attacker to take control of any instance throu
CVE-2021-02549.8 CRITICALJunos OS: Remote code execution vulnerability in overlayd service
CVE-2021-02758.8 HIGHJunos OS: J-Web: Cross-site scripting attack allows an attacker to gain control of another
CVE-2021-02698.8 HIGHJunos OS: J-Web can be compromised through reflected client-side HTTP parameter pollution
CVE-2021-02518.6 HIGHJunos OS: MX Series with MS-PIC, MS-SPC3, MS-MIC or MS-MPC: The BRAS Subscriber Services s
CVE-2021-02498.1 HIGHJunos OS: SRX Series: A remote attacker may be able to cause a PFE buffer overflow to arbi
CVE-2021-02668.1 HIGHcSRX: Use of Hard-coded Cryptographic Keys allows an attacker to take control of the devic
CVE-2021-02658.1 HIGHContrail Insights: The REST API implementation allows an unauthenticated remote attacker t
CVE-2021-02527.8 HIGHJunos OS: NFX Series: Local Code Execution Vulnerability in JDMD Leads to Privilege Escala
CVE-2021-02537.8 HIGHJunos OS: NFX Series: Local Command Execution Vulnerability in JDMD Leads to Privilege Esc
CVE-2021-02457.8 HIGHJunos OS: Junos Fusion: Hard-coded credentials on satellite devices allows a locally authe
CVE-2021-02337.5 HIGHJunos OS: ACX500 Series, ACX4000 Series: Denial of Service due to FFEB crash while process
CVE-2021-02507.5 HIGHJunos OS and Junos OS Evolved: An attacker sending a specific crafted BGP update message w
CVE-2021-02307.5 HIGHJunos OS: SRX Series: Memory leak when querying Aggregated Ethernet (AE) interface statist
CVE-2021-02617.5 HIGHJunos OS: Denial of Service vulnerability in J-Web and web based (HTTP/HTTPS) services cau
CVE-2021-02707.5 HIGHJunos OS: PTX Series, QFX10K Series: A PTX/QFX FPC may restart unexpectedly with the "inli
CVE-2021-02277.5 HIGHJunos OS: SRX Series: Denial of Service in J-Web upon receipt of crafted HTTP packets
CVE-2021-02417.4 HIGHJunos OS: Receipt of specific DHCPv6 packet may cause jdhcpd to crash and restart
CVE-2021-02677.4 HIGHJunos OS: Receipt of a crafted DHCP packet will cause the jdhcpd DHCP service to core.
CVE-2021-02597.4 HIGHJunos OS and Junos OS Evolved: QFX5K Series: Underlay network traffic might not be process

Showing top 20 of 53 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-113

V. Comments for CVE-2021-0268

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