libspf2 SPF_dns_resolv_lookup() buffer overflow
| libspf2-spfdnsresolvlookup-bo (46055) |  High Risk |
Description:
libspf2 is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by the SPF_dns_resolv_lookup() function in Spf_dns_resolv.c. By sending an overly long DNS TXT record, a remote attacker could overflow a buffer and execute arbitrary code on the system with the privileges of the application using the vulnerable library.
*CVSS:
| Base Score: | 7.5 |
| Access Vector: | Network |
| Access Complexity: | Low |
| Authentication: | None |
| Confidentiality Impact: | Partial |
| Integrity Impact: | Partial |
| Availability Impact: | Partial |
| Temporal Score: | 5.9 |
| Exploitability: | Proof-of-Concept |
| Remediation Level: | Official-Fix |
| Report Confidence: | Confirmed |
Consequences:
Gain Access
Remedy:
Upgrade to the latest version of libspf2 (1.2.8 or later), available from the libspf2 Web site. See References.
For other distributions:
Apply the appropriate update for your system. See References.
References:
- BlueCat Networks Web site: BlueCat Networks.
- DoxPara Research Advisory: DNS TXT Record Parsing Bug in LibSPF2.
- Gentoo Bugzilla Bug 242254: mail-filter/libspf2 <1.2.8 DNS response buffer overflow (CVE-2008-2469).
- libspf2 Web site: libspf2 - SPF Library.
- BID-31881: 'libspf2' DNS TXT Record Handling Remote Buffer Overflow Vulnerability
- CVE-2008-2469: Heap-based buffer overflow in the SPF_dns_resolv_lookup function in Spf_dns_resolv.c in libspf2 before 1.2.8 allows remote attackers to execute arbitrary code via a long DNS TXT record with a modified length field.
- DSA-1659: libspf2 -- buffer overflow
- GLSA-200810-03: libspf2: DNS response buffer overflow
- OSVDB ID: 49277: libspf2 Spf_dns_resolv.c SPF_dns_resolv_lookup Function DNS TXT Record Handling Overflow
- SA32450: BlueCat Meridius Email Gateway libspf2 Buffer Overflow Vulnerability
- US-CERT VU#183657: libspf2 DNS TXT record parsing buffer overflow
- VUPEN/ADV-2008-2896: LibSPF2 DNS TXT Records Parsing Buffer Overflow Vulnerability
Platforms Affected:
- BlueCat Networks Meridius Email Gateway
- Debian Debian Linux 4.0
- Gentoo Linux
- libspf2 libspf2 1.2.1
- libspf2 libspf2 1.2.2
- libspf2 libspf2 1.2.3
- libspf2 libspf2 1.2.4
- libspf2 libspf2 1.2.5
- libspf2 libspf2 1.2.6
- libspf2 libspf2 1.2.7
Reported:
Oct 15, 2008
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.