CVE-2007-4137
Off-by-one error in the QUtf8Decoder::toUnicode function in Trolltech Qt 3 allows context-dependent attackers to cause a denial of service (crash) via a crafted Unicode string that triggers a heap-based buffer overflow.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
Off-by-one error in the QUtf8Decoder::toUnicode function in Trolltech Qt 3 allows context-dependent attackers to cause a denial of service (crash) via a crafted Unicode string that triggers a heap-based buffer overflow. NOTE: Qt 4 has the same error in the QUtf8Codec::convertToUnicode function, but it is not exploitable.
- CVSS 2.0
- 7.5 HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
- EPSS
- 2.34% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- trolltech/qt
- Source
- secalert@redhat.com
References
- ftp://patches.sgi.com/support/free/security/advisories/20070901-01-P.asc
- http://bugs.gentoo.org/show_bug.cgi?id=192472
- http://dist.trolltech.com/developer/download/175791_3.diff
- http://dist.trolltech.com/developer/download/175791_4.diff
- http://fedoranews.org/updates/FEDORA-2007-221.shtml
- http://fedoranews.org/updates/FEDORA-2007-703.shtml
- http://osvdb.org/39384
- http://secunia.com/advisories/26778Vendor Advisory
- http://secunia.com/advisories/26782Vendor Advisory
- http://secunia.com/advisories/26804
- http://secunia.com/advisories/26811Vendor Advisory
- http://secunia.com/advisories/26857
- http://secunia.com/advisories/26868
- http://secunia.com/advisories/26882
- http://secunia.com/advisories/26987
- http://secunia.com/advisories/27053
- http://secunia.com/advisories/27275
- http://secunia.com/advisories/27382
- http://secunia.com/advisories/27996
- http://secunia.com/advisories/28021
- http://security.gentoo.org/glsa/glsa-200710-28.xml
- http://security.gentoo.org/glsa/glsa-200712-08.xml
- http://securitytracker.com/id?1018688
- http://support.avaya.com/elmodocs2/security/ASA-2007-424.htm
- http://trolltech.com/company/newsroom/announcements/press.2007-09-03.7564032119
- http://www.debian.org/security/2007/dsa-1426
- http://www.mandriva.com/security/advisories?name=MDKSA-2007:183
- http://www.novell.com/linux/security/advisories/2007_19_sr.html
- http://www.redhat.com/support/errata/RHSA-2007-0883.html
- http://www.securityfocus.com/archive/1/481498/100/0/threaded
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.