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CVE-2021-3910

NUL character in ROA causes OctoRPKI to crash

OctoRPKI crashes when encountering a repository that returns an invalid ROA (just an encoded NUL (\0) character).

CVSS 3.1 · 4.4 Medium EPSS 1.2% KEV · Not listed
Vendors
Cloudflare Debian
Products
Octorpki Debian Linux
CVE-2021-3978

Improper Preservation of Permissions in github.com/cloudflare/cfrpki/cmd/octorpki

When copying files with rsync, octorpki uses the "-a" flag 0, which forces rsync to copy binaries with the suid bit set as root. Since the provided service definition defaults to root ( https://github.com/cloudflare/cfrpki/blob/master/package/octorpki.service ) this could allow for a vector, when combined with another vulnerability that causes octorpki to process a malicious TAL file, for a local privilege escalation.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Vendors
Cloudflare
Products
Octorpki
CVE-2022-3616

OctoRPKI crash when maximum iterations number is reached

Attackers can create long chains of CAs that would lead to OctoRPKI exceeding its max iterations parameter. In consequence it would cause the program to crash, preventing it from finishing the validation and leading to a denial of service. Credits to Donika Mirdita and Haya Shulman - Fraunhofer SIT, ATHENE, who discovered and reported this vulnerability.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed
Vendors
Cloudflare
Products
Octorpki
CVE-2021-3912

OctoRPKI crashes when processing GZIP bomb returned via malicious repository

OctoRPKI tries to load the entire contents of a repository in memory, and in the case of a GZIP bomb, unzip it in memory, making it possible to create a repository that makes OctoRPKI run out of memory (and thus crash).

CVSS 3.1 · 4.2 Medium EPSS < 1% KEV · Not listed
Vendors
Cloudflare Debian
Products
Octorpki Debian Linux
CVE-2021-3911

Misconfigured IP address field in ROA leads to OctoRPKI crash

If the ROA that a repository returns contains too many bits for the IP address then OctoRPKI will crash.

CVSS 3.1 · 4.2 Medium EPSS < 1% KEV · Not listed
Vendors
Cloudflare Debian
Products
Octorpki Debian Linux
CVE-2021-3909

Infinite open connection causes OctoRPKI to hang forever

OctoRPKI does not limit the length of a connection, allowing for a slowloris DOS attack to take place which makes OctoRPKI wait forever. Specifically, the repository that OctoRPKI sends HTTP requests to will keep the connection open for a day before a response is returned, but does keep drip feeding new bytes to keep the connection alive.

CVSS 3.1 · 4.4 Medium EPSS 1.6% KEV · Not listed
Vendors
Cloudflare Debian
Products
Octorpki Debian Linux
CVE-2021-3908

Infinite certificate chain depth results in OctoRPKI running forever

OctoRPKI does not limit the depth of a certificate chain, allowing for a CA to create children in an ad-hoc fashion, thereby making tree traversal never end.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed
Vendors
Cloudflare Debian
Products
Octorpki Debian Linux
CVE-2021-3907

Arbitrary filepath traversal via URI injection

OctoRPKI does not escape a URI with a filename containing "..", this allows a repository to create a file, (ex. rsync://example.org/repo/../../etc/cron.daily/evil.roa), which would then be written to disk outside the base cache folder. This could allow for remote code execution on the host machine OctoRPKI is running on.

CVSS 3.1 · 7.4 High EPSS 4.2% KEV · Not listed
Vendors
Cloudflare Debian
Products
Octorpki Debian Linux
CVE-2021-3761

OctoRPKI lacks contextual out-of-bounds check when validating RPKI ROA maxLength values

Any CA issuer in the RPKI can trick OctoRPKI prior to 1.3.0 into emitting an invalid VRP "MaxLength" value, causing RTR sessions to terminate. An attacker can use this to disable RPKI Origin Validation in a victim network (for example AS 13335 - Cloudflare) prior to launching a BGP hijack which during normal operations would be rejected as "RPKI invalid". Additionally, in certain deployments RTR session flapping in and of itself also could cause BGP routing churn, causing availability issues.

CVSS 3.1 · 7.5 High EPSS 1.2% KEV · Not listed
Vendors
Cloudflare Debian
Products
Octorpki Debian Linux