Multiple vulnerabilities in HPE HP-UX Using OpenSSL
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 6 |
| CVE-ID | CVE-2020-1971 CVE-2021-23841 CVE-2021-23840 CVE-2021-3449 CVE-2021-3711 CVE-2021-3712 |
| CWE-ID | CWE-476 CWE-20 CWE-119 CWE-125 |
| Exploitation vector | Network |
| Public exploit |
Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #4 is available. |
| Vulnerable software Subscribe |
HP-UX OpenSSL Other software / Other software solutions |
| Vendor | HPE |
Security Bulletin
This security bulletin contains information about 6 vulnerabilities.
1) NULL pointer dereference
EUVDB-ID: #VU48896
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2020-1971
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error. A remote attacker can trigger denial of service conditions via the API functions TS_RESP_verify_response and TS_RESP_verify_token). If an attacker can control both items being compared then that attacker could trigger a crash. For example if the attacker can trick a client or server into checking a malicious certificate against a malicious CRL then this may occur. Note that some applications automatically download CRLs based on a URL embedded in a certificate. This checking happens prior to the signatures on the certificate and CRL being verified. OpenSSL's s_server, s_client and verify tools have support for the "-crl_download" option which implements automatic CRL downloading and this attack has been demonstrated to work against those tools. Note that an unrelated bug means that affected versions of OpenSSL cannot parse or construct correct encodings of EDIPARTYNAME. However it is possible to construct a malformed EDIPARTYNAME that OpenSSL's parser will accept and hence trigger this attack.
Install update from vendor's website.
Vulnerable software versionsHP-UX OpenSSL: before A.01.01.01l.001
CPE2.3 External links
http://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbux04309en_us
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
2) NULL pointer dereference
EUVDB-ID: #VU50740
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2021-23841
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error within the X509_issuer_and_serial_hash() function when parsing the issuer field in the X509 certificate. A remote attacker can supply a specially crafted certificate, trigger a NULL pointer dereference error and perform a denial of service (DoS) attack.
MitigationInstall update from vendor's website.
Vulnerable software versionsHP-UX OpenSSL: before A.01.01.01l.001
CPE2.3 External links
http://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbux04309en_us
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
3) Input validation error
EUVDB-ID: #VU50745
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2021-23840
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input during EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate calls. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
MitigationInstall update from vendor's website.
Vulnerable software versionsHP-UX OpenSSL: before A.01.01.01l.001
CPE2.3 External links
http://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbux04309en_us
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
4) NULL pointer dereference
EUVDB-ID: #VU51733
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2021-3449
CWE-ID:
CWE-476 - NULL Pointer Dereference
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error when processing TLSv1.2 renegotiations. A remote attacker can send a maliciously crafted renegotiation ClientHello message, which omits the signature_algorithms extension but includes a signature_algorithms_cert extension, trigger a NULL pointer dereference error and crash the server. MitigationInstall update from vendor's website.
Vulnerable software versionsHP-UX OpenSSL: before A.01.01.01l.001
CPE2.3 External links
http://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbux04309en_us
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
5) Buffer overflow
EUVDB-ID: #VU56063
Risk: High
CVSSv3.1:
CVE-ID: CVE-2021-3711
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in EVP_PKEY_decrypt() function within implementation of the SM2 decryption. A remote attacker can send specially crafted SM2 content for decryption to trigger a buffer overflow by 62 bytes and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall update from vendor's website.
Vulnerable software versionsHP-UX OpenSSL: before A.01.01.01l.001
CPE2.3 External links
http://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbux04309en_us
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
6) Out-of-bounds read
EUVDB-ID: #VU56064
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2021-3712
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition when processing ASN.1 strings related to a confusion with NULL termination of strings in array. A remote attacker can pass specially crafted data to the application to trigger an out-of-bounds read error and read contents of memory on the system or perform a denial of service (DoS) attack.
Install update from vendor's website.
Vulnerable software versionsHP-UX OpenSSL: before A.01.01.01l.001
CPE2.3 External links
http://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbux04309en_us
Q & A
Can this vulnerability be exploited remotely?
Is there known malware, which exploits this vulnerability?
