CVE-2021-43174 gzip transfer encoding caused out-of-memory crash

2021-11-0916:41:41

CWE-1325

NLnet Labs

www.cve.org

routinator

out-of-memory crash

rrdp

xml

gzip transfer encoding

AI Score

7.9

Confidence

High

EPSS

0.001

Percentile

49.4%

JSON

NLnet Labs Routinator versions 0.9.0 up to and including 0.10.1, support the gzip transfer encoding when querying RRDP repositories. This encoding can be used by an RRDP repository to cause an out-of-memory crash in these versions of Routinator. RRDP uses XML which allows arbitrary amounts of white space in the encoded data. The gzip scheme compresses such white space extremely well, leading to very small compressed files that become huge when being decompressed for further processing, big enough that Routinator runs out of memory when parsing input data waiting for the next XML element.

CNA Affected

[
  {
    "product": "Routinator",
    "vendor": "NLnet Labs",
    "versions": [
      {
        "lessThanOrEqual": "0.10.1",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]