Junos OS and Junos OS Evolved update for cURL
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 9 |
| CVE-ID | CVE-2023-38545 CVE-2023-38546 CVE-2023-23914 CVE-2023-23915 CVE-2020-8284 CVE-2020-8285 CVE-2020-8286 CVE-2018-1000120 CVE-2018-1000122 |
| CWE-ID | CWE-122 CWE-73 CWE-319 CWE-200 CWE-674 CWE-299 CWE-126 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
Juniper Junos OS Operating systems & Components / Operating system Junos OS Evolved Operating systems & Components / Operating system |
| Vendor | Juniper Networks, Inc. |
Security Bulletin
This security bulletin contains information about 9 vulnerabilities.
1) Heap-based buffer overflow
EUVDB-ID: #VU81865
Risk: High
CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2023-38545
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the SOCKS5 proxy handshake. A remote attacker can trick the victim to visit a malicious website, trigger a heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system but requires that SOCKS5 proxy is used and that SOCKS5 handshake is slow (e.g. under heavy load or DoS attack).
Install update from vendor's website.
Vulnerable software versionsJuniper Junos OS: before 24.1R1
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
2) External control of file name or path
EUVDB-ID: #VU81863
Risk: Low
CVSSv3.1: 2.3 [CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-38546
CWE-ID:
CWE-73 - External Control of File Name or Path
Exploit availability: No
DescriptionThe vulnerability allows an attacker to inject arbitrary cookies into request.
The vulnerability exists due to the way cookies are handled by libcurl. If a transfer has cookies enabled when the handle is duplicated, the
cookie-enable state is also cloned - but without cloning the actual
cookies. If the source handle did not read any cookies from a specific
file on disk, the cloned version of the handle would instead store the
file name as none (using the four ASCII letters, no quotes).
none - if such a file exists and is readable in the current directory of the program using libcurl.
Mitigation
Install update from vendor's website.
Vulnerable software versionsJuniper Junos OS: before 24.1R1
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Cleartext transmission of sensitive information
EUVDB-ID: #VU72335
Risk: Medium
CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-23914
CWE-ID:
CWE-319 - Cleartext Transmission of Sensitive Information
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to state issues when handling multiple requests, which results in ignoring HSTS support. A remote attacker can perform MitM attack. MitigationInstall update from vendor's website.
Vulnerable software versionsJunos OS Evolved: 21.4R1-EVO - 22.4R2-EVO
Juniper Junos OS: before 24.1R1
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Cleartext transmission of sensitive information
EUVDB-ID: #VU72336
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2023-23915
CWE-ID:
CWE-319 - Cleartext Transmission of Sensitive Information
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exists due to state issues when handling multiple transfers in parallel, which results in ignoring HSTS support. A remote attacker can perform MitM attack. MitigationInstall update from vendor's website.
Vulnerable software versionsJunos OS Evolved: 21.4R1-EVO - 22.4R2-EVO
Juniper Junos OS: before 24.1R1
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
5) Information disclosure
EUVDB-ID: #VU48893
Risk: Medium
CVSSv3.1: 4.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-8284
CWE-ID:
CWE-200 - Information exposure
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to the way cURL handles PASV responses. A remote attacker with control over malicious FTP server can use the PASV response to trick curl into connecting
back to a given IP address and port, and this way potentially make curl
extract information about services that are otherwise private and not
disclosed, for example doing port scanning and service banner extractions.
Install update from vendor's website.
Vulnerable software versionsJunos OS Evolved: 21.4R1-EVO - 22.4R2-EVO
Juniper Junos OS: before 24.1R1
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
6) Uncontrolled Recursion
EUVDB-ID: #VU48894
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-8285
CWE-ID:
CWE-674 - Uncontrolled Recursion
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due tu uncontrolled recursion when processing FTP responses within the wildcard matching functionality, which allows a callback (set
with <a href="https://curl.se/libcurl/c/CURLOPT_CHUNK_BGN_FUNCTION.html">CURLOPT_CHUNK_BGN_FUNCTION</a>) to return information back to libcurl on
how to handle a specific entry in a directory when libcurl iterates over a
list of all available entries. A remote attacker who controls the malicious FTP server can trick the victim to connect to it and crash the application, which is using the affected libcurl version.
Install update from vendor's website.
Vulnerable software versionsJunos OS Evolved: 21.4R1-EVO - 22.4R2-EVO
Juniper Junos OS: before 24.1R1
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
7) Improper Check for Certificate Revocation
EUVDB-ID: #VU48895
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-8286
CWE-ID:
CWE-299 - Improper Check for Certificate Revocation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to incorrectly implemented checks for OCSP stapling. A remote attacker can provide a fraudulent OCSP response that would appear fine, instead of the real one.
MitigationInstall update from vendor's website.
Vulnerable software versionsJunos OS Evolved: 21.4R1-EVO - 22.4R2-EVO
Juniper Junos OS: before 24.1R1
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
8) Heap-based buffer overflow
EUVDB-ID: #VU11111
Risk: High
CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-1000120
CWE-ID:
CWE-122 - Heap-based Buffer Overflow
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to heap-based buffer overflow. A remote attacker that can control the paths that curl uses for FTP can create specially crafted path names containing the control characters '%00', trigger memory corruption and execute arbitrary code.
Install update from vendor's website.
Vulnerable software versionsJunos OS Evolved: 21.4R1-EVO - 22.4R2-EVO
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
9) Buffer over-read
EUVDB-ID: #VU11108
Risk: Low
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2018-1000122
CWE-ID:
CWE-126 - Buffer over-read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to obtain potentially sensitive information or cause DoS condition.
The weakness exists due to buffer over-read. A remote attacker can cause the target application to trigger a buffer copy
error in processing RTSP URLs and cause the application to crash or
access potentially sensitive information on the target system.
Install update from vendor's website.
Vulnerable software versionsJunos OS Evolved: 21.4R1-EVO - 22.4R2-EVO
External linksQ & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
