SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2005-0255

String handling functions in Mozilla 1.7.3, Firefox 1.0, and Thunderbird before 1.0.2, such as the nsTSubstring_CharT::Replace function, do not properly check the return values of other functions that resize the string, which allows remote attackers to…

MEDIUM 5.0EPSS 4.29%

Does this matter?

Lower severity and a low EPSS score (4.29%). Track it; it rarely justifies an emergency change on its own.

Description

String handling functions in Mozilla 1.7.3, Firefox 1.0, and Thunderbird before 1.0.2, such as the nsTSubstring_CharT::Replace function, do not properly check the return values of other functions that resize the string, which allows remote attackers to cause a denial of service and possibly execute arbitrary code by forcing an out-of-memory state that causes a reallocation to fail and return a pointer to a fixed address, which leads to heap corruption.

CVSS 2.0
5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS
4.29% probability · 91th percentile
CISA KEV
Not listed
Affected
mozilla/firefox · mozilla/mozilla · mozilla/thunderbird
Source
cve@mitre.org

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.