vulnwire
6.5med

CVE-2003-1564

libxml2, possibly before 2.5.0, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cau…

Published 22 y ago · modified 4 mo ago · JSON

CVSS
6.5
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
1.6%
percentile 76%
Public exploits
0
none known

libxml2, possibly before 2.5.0, does not properly detect recursion during entity expansion, which allows context-dependent attackers to cause a denial of service (memory and CPU consumption) via a crafted XML document containing a large number of nested entity references, aka the "billion laughs attack."

Exploit prediction (EPSS)

1.62% probability of exploitation in the next 30 days, higher than 76% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.16.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD2.09.3AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-776 Improper Restriction of Recursive Entity References in DTDs

References

  • secunia.com /advisories/31868 · third-party-advisory, x_refsource_SECUNIA, x_transferred
  • xmlsoft.org /news.html · x_refsource_MISC, x_transferred
  • stylusstudio.com /xmldev/200302/post20020.html · mailing-list, x_refsource_MLIST, x_transferred
  • reddit.com /r/programming/comments/65843/time_to_upgrade_libxml2 · x_refsource_MISC, x_transferred
  • mail.gnome.org /archives/xml/2008-August/msg00034.html · mailing-list, x_refsource_MLIST, x_transferred
  • redhat.com /support/errata/RHSA-2008-0886.html · vendor-advisory, x_refsource_REDHAT, x_transferred

Sources

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