GeneralInformation

Hostnames	go.yaklass.ru
Domains	yaklass.ru
Country	Russian Federation
City	Moscow
Organization	VK Cloud Solutions
ISP	LLC VK
ASN	AS47764
Operating System	Ubuntu

Vulnerabilities

Note: the device may not be impacted by all of these issues. The vulnerabilities are implied based on the software and version.

2023(1)

CVE-2023-44487

7.5The HTTP/2 protocol allows a denial of service (server resource consumption) because request cancellation can reset many streams quickly, as exploited in the wild in August through October 2023.

2021(2)

CVE-2021-23017

7.7A security issue in nginx resolver was identified, which might allow an attacker who is able to forge UDP packets from the DNS server to cause 1-byte memory overwrite, resulting in worker process crash or potential other impact.

CVE-2021-3618

7.4ALPACA is an application layer protocol content confusion attack, exploiting TLS servers implementing different protocols but using compatible certificates, such as multi-domain or wildcard certificates. A MiTM attacker having access to victim's traffic at the TCP/IP layer can redirect traffic from one subdomain to another, resulting in a valid TLS session. This breaks the authentication of TLS and cross-protocol attacks may be possible where the behavior of one protocol service may compromise the other at the application layer.

OpenPorts

22 80 443

22 / tcp

-1988283882 | 2025-03-15T03:33:28.733625

SSH-2.0-OpenSSH_8.2p1 Ubuntu-4ubuntu0.1
Key type: ssh-rsa
Key: AAAAB3NzaC1yc2EAAAADAQABAAABgQC78xjTlNQL23rvfC/mk6V69sScJWY39Bv5nXi72j/mIQ1B
jQKiiy5zpfa6kJyekCul5Yp+DcLBTzG84cE8gr5+z4++A/Tm7KK2MNnjcqxnVpvmrjoGgJebsA/W
4H4c2xavmeEWiweJwhnr43GVMNlDIJGXYFhR9M8nCxVWN1Be/aTWuT6o1XdA/dLokSChAKgNkrX8
Wc1HSopPDpf5KBVYLnM7jF1mNJfgoLCCaZKjVrPNaeR0+GCr6i9yCGG8WjTxcl1dYB8nk4qp96UV
SPXnLmoHODBdji5FqFDBckXvcRwiv+r/xB5J/PNj7pzUzAprWRl5RNvfNOwyqrtFdIPGO1AzKuUG
NV2kLEY8nSBYXtiEO6c0tjnq+SJbYiJjv7r+pgqEzitMhD1AKilgllnG1wd1fKKACrIiQMx0jPKW
VEpEPurjENRHqX8Nu1xsnDtdb/n1yoR82QICU8DlwxRwssXsGqxtStBp0Pr1L9voLuzLtULUrxr2
+IaywU00Ha0=
Fingerprint: de:92:21:2c:ca:d7:ac:6b:9e:02:73:b9:a4:93:86:53

Kex Algorithms:
	curve25519-sha256
	curve25519-sha256@libssh.org
	ecdh-sha2-nistp256
	ecdh-sha2-nistp384
	ecdh-sha2-nistp521
	diffie-hellman-group-exchange-sha256
	diffie-hellman-group16-sha512
	diffie-hellman-group18-sha512
	diffie-hellman-group14-sha256

Server Host Key Algorithms:
	rsa-sha2-512
	rsa-sha2-256
	ssh-rsa
	ecdsa-sha2-nistp256
	ssh-ed25519

Encryption Algorithms:
	chacha20-poly1305@openssh.com
	aes128-ctr
	aes192-ctr
	aes256-ctr
	aes128-gcm@openssh.com
	aes256-gcm@openssh.com

MAC Algorithms:
	umac-64-etm@openssh.com
	umac-128-etm@openssh.com
	hmac-sha2-256-etm@openssh.com
	hmac-sha2-512-etm@openssh.com
	hmac-sha1-etm@openssh.com
	umac-64@openssh.com
	umac-128@openssh.com
	hmac-sha2-256
	hmac-sha2-512
	hmac-sha1

Compression Algorithms:
	none
	zlib@openssh.com

80 / tcp

589765266 | 2025-03-05T21:41:39.338084

Hashes

hash

-1956918592

http.dom_hash

1239617585

http.html_hash

589765266

http.server_hash

967792298

http.title_hash

1522695184

301 Moved Permanently

HTTP/1.1 301 Moved Permanently
Server: nginx/1.18.0 (Ubuntu)
Date: Wed, 05 Mar 2025 21:41:39 GMT
Content-Type: text/html
Content-Length: 178
Connection: keep-alive
Location: https://212.233.97.26/

Vulnerabilities

443 / tcp

2103933235 | 2025-03-22T19:08:23.152325

Hashes

hash

1041620797

http.dom_hash

-963810631

http.favicon.hash

-1771086598

http.html_hash

2103933235

http.robots_hash

1558779001

http.server_hash

967792298

ЯКласс

HTTP/1.1 200 OK
Server: nginx/1.18.0 (Ubuntu)
Date: Sat, 22 Mar 2025 19:08:22 GMT
Content-Type: text/html
Content-Length: 48825
Last-Modified: Mon, 17 Mar 2025 07:51:25 GMT
Connection: keep-alive
Vary: Accept-Encoding
ETag: "67d7d47d-beb9"
Expires: Sat, 22 Mar 2025 19:08:21 GMT
Cache-Control: no-cache
Accept-Ranges: bytes

SSL Certificate

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            03:9c:0f:63:37:b1:f9:2d:25:dc:dd:20:12:db:fd:ac:32:0e
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: C=US, O=Let's Encrypt, CN=R10
        Validity
            Not Before: Feb  6 10:13:39 2025 GMT
            Not After : May  7 10:13:38 2025 GMT
        Subject: CN=go.yaklass.ru
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                Public-Key: (2048 bit)
                Modulus:
                    00:e8:0b:d5:0a:c1:90:f8:0f:62:65:98:42:82:9e:
                    83:28:76:aa:60:34:37:db:7c:48:60:cb:76:13:31:
                    50:7d:ad:26:94:80:ba:d0:77:cb:af:60:2e:26:22:
                    0f:1c:cb:95:f6:57:7e:bb:ff:30:50:ae:77:7e:e4:
                    4f:67:08:e0:04:0f:a9:89:c0:58:23:02:bc:08:b3:
                    a5:92:0b:5d:68:b9:41:5c:3c:1a:f0:50:78:bc:61:
                    f6:cb:2d:ef:04:77:c2:ec:9d:f4:54:49:b4:cd:1e:
                    e6:f3:c9:12:c2:d7:48:54:60:ff:ad:41:53:c6:48:
                    5e:eb:27:e2:46:fc:03:3c:67:7b:d0:1a:c4:e9:23:
                    c1:11:26:26:70:e8:89:08:1d:21:2a:e5:3e:07:76:
                    d8:c7:d3:d7:97:01:32:4d:9c:ae:b0:cd:e8:3b:db:
                    f7:a6:0a:f4:de:95:48:e9:6d:e8:d4:5c:b4:b3:48:
                    cf:6f:81:59:ee:3b:3e:ed:03:b0:6c:01:0d:93:5c:
                    da:e4:b2:f8:5c:01:1a:a9:ab:f2:86:3d:52:c8:14:
                    c3:07:0d:a3:46:ac:bd:61:9c:a9:41:23:66:4c:92:
                    e0:07:66:ba:e7:23:3a:72:b6:1f:d8:ee:b0:86:41:
                    d3:a5:51:17:17:b2:53:0a:4e:df:da:ba:1a:8f:e0:
                    f9:5f
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Key Usage: critical
                Digital Signature, Key Encipherment
            X509v3 Extended Key Usage: 
                TLS Web Server Authentication, TLS Web Client Authentication
            X509v3 Basic Constraints: critical
                CA:FALSE
            X509v3 Subject Key Identifier: 
                C4:7F:EF:00:3A:3F:73:10:9A:BF:E4:EB:66:20:AE:FF:C5:FA:54:FD
            X509v3 Authority Key Identifier: 
                BB:BC:C3:47:A5:E4:BC:A9:C6:C3:A4:72:0C:10:8D:A2:35:E1:C8:E8
            Authority Information Access: 
                OCSP - URI:http://r10.o.lencr.org
                CA Issuers - URI:http://r10.i.lencr.org/
            X509v3 Subject Alternative Name: 
                DNS:go.yaklass.ru
            X509v3 Certificate Policies: 
                Policy: 2.23.140.1.2.1
            CT Precertificate SCTs: 
                Signed Certificate Timestamp:
                    Version   : v1 (0x0)
                    Log ID    : 7D:59:1E:12:E1:78:2A:7B:1C:61:67:7C:5E:FD:F8:D0:
                                87:5C:14:A0:4E:95:9E:B9:03:2F:D9:0E:8C:2E:79:B8
                    Timestamp : Feb  6 11:12:09.935 2025 GMT
                    Extensions: none
                    Signature : ecdsa-with-SHA256
                                30:44:02:20:02:6F:4D:64:46:D3:B8:D0:2C:83:B1:10:
                                5D:1A:34:9D:6C:A7:21:E0:9F:19:99:84:52:BB:C1:E8:
                                48:26:51:85:02:20:06:D0:D1:3C:36:90:64:35:A8:EA:
                                14:A0:12:A1:AD:58:AC:8E:2F:60:C1:20:36:80:A4:4C:
                                15:F9:8A:BC:A5:06
                Signed Certificate Timestamp:
                    Version   : v1 (0x0)
                    Log ID    : A2:E3:0A:E4:45:EF:BD:AD:9B:7E:38:ED:47:67:77:53:
                                D7:82:5B:84:94:D7:2B:5E:1B:2C:C4:B9:50:A4:47:E7
                    Timestamp : Feb  6 11:12:09.938 2025 GMT
                    Extensions: none
                    Signature : ecdsa-with-SHA256
                                30:44:02:20:27:4A:19:D4:BE:63:9F:5B:9E:2C:D9:F4:
                                D5:5A:C7:42:D6:84:D6:3C:FA:53:82:0D:D2:E4:05:92:
                                40:91:6B:C3:02:20:46:43:CF:F3:5E:00:FD:BF:55:B8:
                                45:F7:24:47:5B:47:D2:AC:AA:9C:C3:E7:DB:AD:98:65:
                                AA:8C:2E:92:AD:AE
    Signature Algorithm: sha256WithRSAEncryption
    Signature Value:
        62:5d:ac:c7:e4:a7:cf:25:5e:03:a9:1d:ab:cf:22:68:7e:c4:
        41:aa:21:10:0f:99:b2:cd:b8:40:9a:45:26:2f:06:99:39:4b:
        82:45:9a:91:1b:be:9e:37:5c:6a:ae:f8:40:f1:56:6b:93:e1:
        bd:5e:13:d3:80:2c:94:16:1a:42:fe:46:ec:8d:67:80:8c:8b:
        46:4d:b8:81:fd:c0:18:03:de:82:8d:bc:16:f1:8b:b3:92:4a:
        56:7b:e9:96:53:09:18:e7:f9:d9:81:a2:f6:2d:a9:14:92:0f:
        b4:d6:a9:15:fd:24:26:03:47:91:36:54:c0:88:bf:05:be:f5:
        53:b6:41:b9:dd:6b:f2:50:12:01:d4:18:40:f6:29:d8:e4:09:
        fa:08:e3:41:25:48:61:b7:01:ee:95:67:ca:c6:85:c7:b1:86:
        f5:ad:f1:4d:a0:38:e8:a0:1b:06:01:b7:71:23:3e:9c:3b:e6:
        b0:7b:d2:c7:ff:f3:a6:5f:b5:f2:5a:72:cb:00:61:58:3d:d1:
        a2:8a:b1:4f:da:85:48:81:19:dc:dc:05:f5:0b:45:88:0b:ef:
        70:60:52:de:78:b8:ad:5d:f1:fd:a9:c7:3d:d8:a7:42:0c:12:
        07:88:fb:b3:34:1d:13:e1:96:5f:06:d5:19:05:5f:56:f1:59:
        03:4a:2e:57

Vulnerabilities

212.233.97.26

Last Seen: 2025-03-22

Tags:

GeneralInformation

Vulnerabilities

OpenPorts

22 / tcp

-1988283882 | 2025-03-15T03:33:28.733625

OpenSSH8.2p1 Ubuntu 4ubuntu0.1

80 / tcp

589765266 | 2025-03-05T21:41:39.338084

Hashes

nginx1.18.0

443 / tcp

2103933235 | 2025-03-22T19:08:23.152325

Hashes

nginx1.18.0

Products

Pricing

Contact Us

212.233.97.26

Last Seen: 2025-03-22

Tags:

GeneralInformation

Vulnerabilities All ports Port 80 Port 443 Latest CVSS

OpenPorts

22 / tcp -1988283882 | 2025-03-15T03:33:28.733625

OpenSSH8.2p1 Ubuntu 4ubuntu0.1

80 / tcp 589765266 | 2025-03-05T21:41:39.338084

Hashes

nginx1.18.0

443 / tcp 2103933235 | 2025-03-22T19:08:23.152325

Hashes

nginx1.18.0

Products

Pricing

Contact Us

Vulnerabilities

22 / tcp

-1988283882 | 2025-03-15T03:33:28.733625

80 / tcp

589765266 | 2025-03-05T21:41:39.338084

443 / tcp

2103933235 | 2025-03-22T19:08:23.152325